[go: up one dir, main page]

CN116918351A - 混合音频波束成形系统 - Google Patents

混合音频波束成形系统 Download PDF

Info

Publication number
CN116918351A
CN116918351A CN202280016286.5A CN202280016286A CN116918351A CN 116918351 A CN116918351 A CN 116918351A CN 202280016286 A CN202280016286 A CN 202280016286A CN 116918351 A CN116918351 A CN 116918351A
Authority
CN
China
Prior art keywords
beamforming
signal
frequency
frequency band
band signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202280016286.5A
Other languages
English (en)
Inventor
田文顺
约翰·凯西·吉布斯
迈克尔·莱恩·莱斯特
马修·T·亚伯拉罕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shure Acquisition Holdings Inc
Original Assignee
Shure Acquisition Holdings Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shure Acquisition Holdings Inc filed Critical Shure Acquisition Holdings Inc
Publication of CN116918351A publication Critical patent/CN116918351A/zh
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/003—Mems transducers or their use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/23—Direction finding using a sum-delay beam-former
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/25—Array processing for suppression of unwanted side-lobes in directivity characteristics, e.g. a blocking matrix

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

本发明提供具有较窄波束及经改进方向性的混合音频波束成形系统及方法。所述混合音频波束成形系统包含用于使用时域波束成形技术处理音频信号的较高频带信号的时域波束成形器，及用于使用频域波束成形技术处理所述音频信号的较低频带信号的群组的频域波束成形器。

Description

混合音频波束成形系统
相关申请案的交叉参考
本申请案主张2021年1月28日提出申请的第63/142,711号美国临时专利申请案的权益，所述临时专利申请案以其全文引用方式完全并入本文中。
技术领域
本申请案大体来说涉及音频波束成形系统。特定来说，本申请案涉及通过使用时域波束成形器来处理音频信号的较高频带信号及使用频域波束成形器来处理音频信号的较低频带信号而具有较窄波束及经改进方向性的混合音频波束成形系统。
背景技术
例如会议室、董事会会议室、视频会议应用等会议环境可涉及使用麦克风来捕获来自此类环境中活跃的各种音频源的声音。例如，此类音频源可包含人的讲话声。所捕获的声音可通过放大式扬声器(用于声音增强)传播给环境中的本地观众，及/或传播给远离环境的其他人(例如经由电视广播及/或网络广播)。麦克风的类型及其在特定环境中的放置可取决于音频源的位置、物理空间要求、美学、房间布局，及/或其它考虑。例如，在一些环境中，麦克风可放置在音频源附近的桌上或讲台上。在其它环境中，举例来说，麦克风可安装在头顶上，以捕获来自整个房间的声音。因此，麦克风可有各种大小、外形尺寸、安装选项及布线选项来适合特定环境的需要。
传统麦克风通常具有固定极性型样及几个可手动选择的设定。为捕获会议环境中的声音，可同时使用许多传统麦克风来捕获环境内的音频源。然而，传统麦克风也容易捕获到不想要的音频，例如室内噪声、回声、混响及其它非所要的音频元素。对这些不想要的噪声的捕获会因使用许多麦克风而加剧。
具有多个麦克风元件的阵列麦克风可提供例如可操纵覆盖范围或具有波束或波瓣的拾取型样等益处，这允许麦克风聚焦于所要音频源并拒斥不想要的声音，例如室内噪声。操纵音频拾取型样的能力提供能够降低麦克风放置的精确性的益处，且以此方式，阵列麦克风更具宽容性。此外，阵列麦克风提供利用一个阵列麦克风或单元拾取多个音频源的能力，这再次归因于操纵拾取型样的能力。
为实现具有一或多个波束或波瓣的特定拾取型样，使用波束成形来组合来自麦克风元件或阵列麦克风的信号。然而，由于声音在较低频率下的波长较长，对宽带音频信号使用典型波束成形算法(例如，在时域中操作的延迟与加总)产生的波束的宽度可能比所配置或所要宽。此外，当对宽带音频信号使用典型波束成形算法时，波束的方向性可并非最优的。较宽波束宽度及非最优波束方向性可导致感测到非所要音频、降低阵列麦克风的性能及用户对阵列麦克风不满意。另外，跨越整个频率范围使用频域波束成形可为计算密集及存储器资源密集的。
因此，音频波束成形系统有机会解决这些关注点。更特定来说，通过使用时域波束成形器来处理音频信号的较高频带信号及使用频域波束成形器来处理音频信号的较低频带信号，有机会实现具有较窄波束及经改进方向性的混合音频波束成形系统。
发明内容
本发明打算通过提供音频波束成形器系统及方法而解决上述问题，所述音频波束成形器系统及方法经设计以尤其：(1)提供时域波束成形器以基于从音频信号导出的较高频带信号且使用时域波束成形技术产生第一经波束成形信号；(2)提供频域波束成形器以基于从所述音频信号导出的较低频带信号且针对所述较低频带信号的第一群组使用第一频域波束成形技术并针对所述较低频带信号的第二群组使用第二频域波束成形技术产生第二经波束成形信号；(3)基于由所述时域波束成形器产生的所述第一经波束成形信号及由所述频域波束成形器产生的所述第二经波束成形信号输出经波束成形输出信号；(4)具有特定来说在较低频率中的波束的经改进宽度及方向性；及(5)通过避免跨越整个频率范围使用频域波束成形而减少计算及存储器资源的使用。
在一实施例中，一种波束成形系统包含：第一波束成形器，其经配置以基于从多个音频信号导出的第一频带信号产生第一经波束成形信号；第二波束成形器，其经配置以基于从所述多个音频信号导出的第二频带信号产生第二经波束成形信号；及输出产生单元，其与所述第一及第二波束成形器通信。所述第一波束成形器经配置以使用第一波束成形技术处理所述第一频带信号，所述第二波束成形器经配置以使用第二波束成形技术处理所述第二频带信号，且所述输出产生单元经配置以基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
在另一实施例中，一种波束成形系统包含：第一波束成形器，其经配置以基于从多个音频信号导出的较高频带信号产生第一经波束成形信号；第二波束成形器，其经配置以基于从所述多个音频信号导出的较低频带信号产生第二经波束成形信号；及输出产生单元，其与所述第一及第二波束成形器通信。所述第一波束成形器经配置以使用时域波束成形技术处理所述较高频带信号，且所述第二波束成形器经配置以使用第一频域波束成形技术处理所述较低频带信号的第一群组及使用第二频域波束成形技术处理所述较低频带信号的第二群组。所述输出产生单元经配置以基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
在又一实施例中，一种方法包含：接收多个音频信号；使用时域波束成形技术基于从所述多个音频信号导出的较高频带信号产生第一经波束成形信号；使用时域波束成形技术基于从所述多个音频信号导出的较高频带信号产生第一经波束成形信号；及基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
在另一实施例中，一种波束成形系统包含：第一波束成形器，其经配置以基于从多个音频信号导出的第一频带信号产生第一经波束成形信号；第二波束成形器，其经配置以基于从所述多个音频信号导出的第二频带信号产生第二经波束成形信号；及输出产生单元，其与所述第一及第二波束成形器通信。所述第一波束成形器经配置以使用时域波束成形技术处理所述第一频带信号，且所述第二波束成形器经配置以使用第一频域波束成形技术处理所述第二频带信号的第一群组及使用第二频域波束成形技术处理所述第二频带信号的第二群组。所述输出产生单元经配置以基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
依据以下详细说明及附图，将明了且更全面地理解这些及其它实施例以及各种排列及方面，以下详细说明及附图陈述指示其中可采用本发明的原理的各种方式的说明性实施例。
附图说明
图1是根据一些实施例的供与阵列麦克风一起使用的混合音频波束成形系统的框图。
图2是图解说明根据一些实施例的用于使用图1的混合音频波束成形系统对多个麦克风的音频信号进行波束成形的操作的流程图。
图3是图解说明根据一些实施例的用于对从多个麦克风的音频信号导出的较高频带信号进行波束成形的操作的流程图，且所述波束成形是使用时域波束成形器进行。
图4是图解说明根据一些实施例的用于对从多个麦克风的音频信号导出的较低频带信号进行波束成形的操作的流程图，且所述波束成形是使用频域波束成形器进行。
具体实施方式
以下说明根据本发明的原理描述、图解说明且例示本发明的一或多个特定实施例。提供此说明并非将本发明限于本文中所描述的实施例，而是以以下的方式解释且教示本发明的原理：使得所属领域的普通技术人员能够理解这些原理且在所述理解的情况下能够应用其以不仅实践本文中所描述的实施例，而且实践根据这些原理可想到的其它实施例。本发明的范围打算覆盖可照字面地或者在等效内容的原则下归属于所附权利要求书的范围内的所有此些实施例。
应注意，在说明及图式中，相似或基本上类似的元件可用相同参考编号来标示。然而，有时可用不同数字来标示这些元件，举例来说，例如在其中此类标示促进更清晰说明的情形中。另外，本文中所陈述的图式未必按比例绘制，且在一些例子中比例可能已被放大以更清晰地描绘某些特征。此类标示及图式实践未必暗指基础实质目的。如上文所述，本说明书打算被视为整体且根据如本文中所教示的本发明的原理来解释且被所属领域的普通技术人员理解。
本文中所描述的混合音频波束成形系统及方法可使得阵列麦克风能够具有较窄波束、经改进波束方向性及跨越不同频率范围的较佳总体性能。混合音频波束成形系统可包含经配置以使用时域波束成形技术处理较高频带信号的时域波束成形器，及经配置以使用多种频域波束成形技术处理较低频带信号的群组的频域波束成形器。较高频带信号及较低频带信号可从音频信号(例如来自阵列麦克风的麦克风元件的音频信号)导出。混合音频波束成形系统可基于来自时域波束成形器的第一经波束成形信号及来自频域波束成形器的第二经波束成形信号产生经波束成形输出信号。
频域波束成形器可使用例如离散傅立叶变换(DFT)等的变换将时域音频信号转换成频域，其中跳变大小小于DFT块大小。频域波束成形器可利用第一频域波束成形技术来处理较低频带信号的第一群组，例如较低频带信号的较低频率分量。频域波束成形器还可利用第二频域波束成形技术来处理较低频带信号的第二群组，例如较低频带信号的较高频率分量。通过在频域波束成形器中使用多种频域波束成形技术，频域波束成形器可针对较低频率范围中的音频产生具有经改进方向性的较窄波束。来自频域波束成形器的经波束成形信号可转换成时域，例如逆DFT，且经转换时域信号可使用加权重叠相加(WOLA)方法来进一步平滑化。
如此，组合使用时域波束成形技术的时域波束成形器与使用频域波束成形技术的频域波束成形器可在使用阵列麦克风中的相同组麦克风元件时产生跨不同频率范围更优的波束宽度及方向性。另外，可避免在跨越整个频率范围使用频域波束成形时所需的经增加计算及存储器资源。波束成形器的等待时间、计算资源及权重系数的存储因此可通过使用本文中所描述的混合音频波束成形系统及方法而最小化。
图1是混合音频波束成形系统100的框图。混合音频波束成形系统100可包含：麦克风元件102a、b、c、…、z，其包含在阵列麦克风中；较低频带信号路径103，其包含低通滤波器104、抽取器106、频域波束成形器108、内插器110及低通滤波器112；较高频带信号路径113，其包含高通滤波器114、时域波束成形器116及延迟元件118；权重确定单元120；及输出产生单元122。混合音频波束成形系统100中所包含的各种组件可使用可由具有处理器及存储器的计算装置执行的软件实施，及/或由硬件(例如，离散逻辑电路、专用集成电路(ASIC)、可编程门阵列(PGA)、现场可编程门阵列(FPGA)等)实施。
包含麦克风元件102a、b、c、…、z的阵列麦克风可检测来自音频源的处于各种频率的声音。举例来说，阵列麦克风可用于会议室或董事会会议室中，其中音频源可为一或多个演讲人员及/或其它所要声音。环境中可能存在可为非所要的其它声音，例如来自通风、其他人、音频/视觉设备、电子装置等的噪声。在典型情境中，音频源可坐在桌子旁边的椅子上，尽管音频源的其它配置及放置是经考虑及可能的。
阵列麦克风可放置于桌子、讲台、桌面上等，使得可检测及捕获来自音频源的声音，例如演讲人员所说的语音。阵列麦克风可包含任何数目个麦克风元件102a、b、c、…、z，且能够使用混合波束成形音频系统100形成多个拾取型样，使得来自音频源的声音更一致地被检测及捕获。麦克风元件102a、b、c、…、z可布置成任何适合的布局，包含同心环及/或谐波嵌套。在实施例中，麦克风元件102a、b、c、…、z可布置成大体对称或可为非对称的。在另外的实施例中，举例来说，麦克风元件102a、b、c、…、z可布置于衬底上、放置于框架中，或个别地悬置。共同让与的美国专利第9,565,493号中描述阵列麦克风的实施例，所述专利特此以其全文引用的方式并入本文中。
在一些实施例中，麦克风元件102a、b、c、…、z可各自为MEMS(微机电系统)麦克风。在其它实施例中，麦克风元件102a、b、c、…、z可为驻极体电容式麦克风、动态麦克风、带式麦克风、压电麦克风，及/或其它类型的麦克风。在实施例中，麦克风元件102a、b、c、…、z可为主要在一个方向上灵敏的单向麦克风。在其它实施例中，麦克风元件102a、b、c、…、z可具有其它方向性或极性型样，例如心形、子心形或全向。
阵列麦克风中的麦克风元件102a、b、c、…、z中的每一者可检测声音且将声音转换成音频信号。阵列麦克风中的组件(例如模/数转换器、处理器及/或其它组件)可处理音频信号且最终产生一或多个数字音频输出信号。在一些实施例中，数字音频输出信号可符合用于经由以太网发射音频的Dante标准，或可符合另一标准。在其它实施例中，阵列麦克风中的麦克风元件102a、b、c、…、z可输出模拟音频信号，使得阵列麦克风100外部的其它组件及装置(例如，处理器、混频器、记录器、放大器等)可处理模拟音频信号。
如果麦克风元件102a、b、c、…、z仅与典型波束成形器(例如，在时域中操作的延迟与加总波束成形器)一起使用，那么波束宽度可比所要宽且波束的方向性可并非最优的，尤其在较低频率下。这可归因于声音在这些较低频率下的波长较长。此外，时域中的较低频率的波束成形可导致过多的旁瓣、相对高的等待时间，及/或处理期间的较高计算负载。
然而，如本文中进一步详细地描述，较低频带信号路径103(包含频域波束成形器108)及较高频带信号路径113(包含时域波束成形器116)两者可与麦克风元件102a、b、c、…、z通信。特定来说，频域波束成形器108可用于处理从麦克风元件102a、b、c、…、z的音频信号导出的较低频带信号。举例来说，较低频带信号可介于从0kHz到12kHz。时域波束成形器116可用于处理也从麦克风元件102a、b、c、…、z的音频信号导出的较高频带信号。举例来说，较高频带信号可介于从12kHz到24kHz。如此，使用混合音频波束成形系统100可产生跨不同频率(包含在较低频率下)较窄且具有经改进方向性的波束宽度。
图2中展示用于阵列麦克风中的音频信号的混合波束成形的过程200的实施例。过程200可用于使用图1中所展示的混合音频波束成形系统100从阵列麦克风输出经波束成形输出信号，其中经波束成形输出信号具有较窄波束及经改进方向性。系统100内或外部的一或多个处理器及/或其它处理组件(例如，模/数转换器、加密芯片等)可执行过程200的步骤中的任一者、一些或全部。一或多个其它类型的组件(例如，存储器、输入及/或输出装置、发射器、接收器、缓冲器、驱动器、离散组件等)也可联合处理器及/或其它处理组件一起利用来执行过程200的步骤中的任一者、一些或全部。
在步骤202处，权重确定单元120可基于波束的所要位置及宽度确定频域波束成形器108(其处理较低频带信号)及时域波束成形器116(其处理较高频带信号)的权重系数。在一些实施例中，可使用自动决策方案(例如，波束的自动聚焦、放置及/或部署)通过编程或算法确定波束的所要位置及宽度。共同让与的美国专利申请案第16/826,115及16/887,790号中描述此类方案的实施例，所述专利申请案特此以其全文引用的方式并入本文中。在其它实施例中，波束的所要位置及宽度可由用户例如经由与权重确定单元120通信的电子装置上的用户接口来配置。
举例来说，波束的所要位置可确定或配置为相对于阵列麦克风的位置的特定三维坐标，例如在笛卡尔坐标(即，x，y，z)中，或在球坐标(即，径向距离r，极角θ(theta)，方位角中。举例来说，波束的所要宽度可按等级(例如，窄、中等、宽等)确定或配置，或者确定或配置为视场的角度(例如，度数、度数的改变、百分比改变等)。
在一些实施例中，波束的各种位置及宽度的权重系数中的一些或全部可预定并存储于位于权重确定单元120中或与权重确定单元120通信的存储器中。在其它实施例中，波束的各种位置及宽度的权重系数中的一些或全部可即时计算，以便减少权重系数的存储所需的存储器的量。举例来说，针对在频域中以相对高效及低等待时间方式操作的延迟与加总波束成形技术即时计算此类权重系数可为可能的。所述计算可利用所有麦克风元件102a、b、c、…、z的恒定增益及均匀的递增相移量。
在实施例中，某些波束成形技术(例如，在频域中操作的最小方差无失真响应)的波束的各种位置及宽度的权重系数可使用静态噪声协方差产生以获得较窄波束宽度，或使用动态噪声协方差产生以改进信噪比。
在步骤204处可在较低频带信号路径103处(在实施例中，在低通滤波器104处)以及在较高频带信号路径113处(在实施例中，在高通滤波器114处)接收来自麦克风元件102a、b、c、…、z的音频信号。在步骤206处，可使用时域波束成形器116基于从在步骤204处接收的来自麦克风元件102a、b、c、…、z的音频信号导出的较高频带信号且通过使用时域波束成形技术来产生第一经波束成形信号。较高频带信号可包含中间及较高频率，例如，12kHz到24 kHz。时域波束成形器116中所使用的时域波束成形技术可利用在步骤202处确定的权重系数。下文关于图3描述步骤206的实施例。
在步骤208处，可使用频域波束成形器108基于从在步骤204处接收的来自麦克风元件102a、b、c、…、z的音频信号导出的较低频带信号且通过对所述较低频带信号的不同群组使用频域波束成形技术来产生第二经波束成形信号。音频信号可从时域转换成频域以便产生在频域波束成形器108中利用的较低频域信号。较低频带信号可包含具有比较高频带信号低的频率的信号，例如，0 kHz到12 kHz。频域波束成形器108中所使用的频域波束成形技术可利用在步骤202处确定的权重系数。下文关于图4描述步骤208的实施例。在实施例中，步骤206及208可基本上同时执行或可在不同时间执行。
在步骤210处可由输出产生单元122产生经波束成形输出信号。可通过组合分别由时域波束成形器116及频域波束成形器108产生的第一经波束成形信号与第二经波束成形信号而产生经波束成形输出信号。在实施例中，第一经波束成形信号与第二经波束成形信号可通过由输出产生单元122加总在一起而组合以产生经波束成形输出信号。举例来说，经波束成形输出信号可为数字信号，例如符合用于经由以太网发射音频的Dante标准的信号。在实施例中，经波束成形输出信号可输出到混合音频波束成形系统100及/或阵列麦克风外部的组件或装置(例如，处理器、混频器、记录器、放大器等)。
图3展示用于使用包含时域波束成形器108的较高频带信号路径113对较高频带信号进行时域波束成形的过程206的实施例。图3中所展示的过程206可对应于图2中所展示的过程200的步骤206。在图3的过程206中，可在步骤302处由高通滤波器114对在过程200的步骤204处接收的音频信号进行滤波。高通滤波器114可经配置以使具有较高频率范围(例如，12kHz到24kHz)中的频率的音频信号通过。在实施例中，高通滤波器114的频谱响应可与(较低频带信号路径103的)低通滤波器104的频谱响应匹配，以便使宽带信号(即，经波束成形输出信号)的频谱响应平整。
在步骤304处，可由时域波束成形器116使用时域波束成形技术处理来自高通滤波器114的较高频带信号。在实施例中，时域波束成形器116可利用延迟与加总波束成形器技术。如先前所描述，时域波束成形器116所使用的权重系数可在步骤202处从权重确定单元120接收，基于波束的所要位置及宽度。
在步骤306处，可由延迟元件118使由时域波束成形器116产生的信号延迟以产生提供到输出产生单元122的第一经波束成形信号。输出产生单元122可在过程200的步骤210处组合第一与第二经波束成形信号，如先前所描述。延迟元件118可将适当延迟量添加到来自时域波束成形器116的信号以便使所述信号与由较低频带信号路径103产生的第二经波束成形信号对准。这可归因于较低频带信号路径103由于其额外组件(即，低通滤波器104、112，抽取器106，及内插器110)以及由于频域波束成形器108而具有较多的等待时间。因此，由延迟元件118添加的延迟量可基于较低频带信号路径103与较高频带信号路径113之间在等待时间上的差异。
图4展示用于使用包含频域波束成形器108的较低频带信号路径103对较低频带信号进行频域波束成形的过程208的实施例。图4中所展示的过程208可对应于图2中所展示的过程200的步骤208。在图4的过程208中，在步骤402处可由低通滤波器104对在过程200的步骤204处接收的音频信号进行滤波。低通滤波器104可经配置以使具有较低频率范围(例如，0kHz到12kHz)中的频率的音频信号通过。
在步骤404处，可由抽取器106处理来自低通滤波器104的经滤波信号以产生较低频带信号以供由频域波束成形器108处理。特定来说，与在步骤204处接收的音频信号的取样速率相比，抽取器106可通过特定因数将经滤波信号下取样到较低取样速率。经滤波信号可经下取样以便简化由频域波束成形器108进行的计算及处理复杂度。在实施例中，抽取器106可通过因数2将经滤波信号从音频信号的48kHz取样速率下取样到24kHz取样速率。在其它实施例中，抽取器106可通过不同因数将经滤波信号下取样到另一适当取样速率。
在步骤405处，可使用适合频率变换(例如快速傅立叶变换、短时傅立叶变换、离散傅立叶变换、离散余弦变换，或小波变换)将经抽取的经滤波信号从时域变换成频域。可使用频域波束成形技术处理较低频带信号，以便避免在对较低频带信号使用时域波束成形技术时可发生的关于过多旁瓣的问题及对使用高阶滤波器组的需要。
在步骤406及408处，频域波束成形器108可使用不同的频域波束成形技术处理较低频带信号的两个群组。虽然图4展示较低频带信号以两个群组处理，但在实施例中，频域波束成形器108使用两种或更多种频域波束成形技术处理较低频带信号的两个以上群组是经考虑及可能的。
在实施例中，频域中的较低频带信号可使用加权重叠相加(WOLA)方法来变换。WOLA方法可将较低频带信号分解成具有特定大小的重叠帧，以便减少帧之间的边界处的伪迹(artifact)。帧可使用频率变换而变换成频格(frequency bin)。频格可划分成第一群组(例如，较低频带信号的较低频率分量)及第二群组(例如，较低频带信号的较高频率分量)。
在实施例中，WOLA方法的帧大小可为可配置的，以允许(1)较低频带信号路径103中的等待时间与(2)计算资源及存储器使用率之间的折衷。特定来说，如果帧大小小于或等于频率变换的块大小，那么较低频带信号路径103的等待时间可在利用相对较高的计算资源及存储器时减少。FFT变换的块大小及帧大小可以样本数目来表达。举例来说，在使用零填充方法来构成FFT的整个数据块的情况下，在FFT变换的块大小是256且帧大小是256时较低频带信号路径103的等待时间可大于在帧大小是128或192时(且在FFT变换的块大小保持在256时)较低频带信号路径103的等待时间。
在步骤406处，可由频域波束成形器108使用第一频域波束成形技术处理较低频带信号的第一群组。在实施例中，第一群组可为较低频带信号的较低频率分量，且第一频域波束成形技术可为超方向性波束成形技术，例如最小方差无失真响应(MVDR)波束成形技术。在其它实施例中，第一频域波束成形技术可为另一适当超方向性波束成形技术。较低频带信号的较低频率分量的频率范围可取决于波束成形器与之一起使用的麦克风阵列的物理孔径大小，例如频率对应于孔径大小以下。举例来说，在实施例中，较低频带信号的较低频率分量可在大约0kHz到1kHz或大约0kHz到2kHz的范围内。如先前所描述，频域波束成形器116中的第一频域波束成形技术所使用的权重系数可在步骤202处从权重确定单元120接收，基于波束的所要位置及宽度。
在步骤408处，可由频域波束成形器108使用第二频域波束成形技术处理较低频带信号的第二群组。在实施例中，第二群组可为较低频带信号的较高频率分量，且第二频域波束成形技术可为延迟与加总波束成形技术。在其它实施例中，第二频域波束成形技术可为另一适当波束成形技术。较低频带信号的较高频率分量的频率范围也可取决于波束成形器与之一起使用的麦克风阵列的物理孔径大小，例如频率对应于孔径大小以上一到两个八度。举例来说，在实施例中，较低频带信号的较低频率分量可在大约1kHz或2kHz及以上的范围内。如先前所描述，频域波束成形器116中的第二频域波束成形技术所使用的权重系数可在步骤202处从权重确定单元120接收，基于波束的所要位置及宽度。在实施例中，步骤406与408可基本上同时执行或可在不同时间执行。
在步骤409处，可使用适合逆频率变换(例如逆快速傅立叶变换、逆短时傅立叶变换、逆离散傅立叶变换、逆离散余弦变换，或逆小波变换)将由频域波束成形器108(基于第一及第二频率波束成形技术)产生的信号从频域变换成时域。在实施例中，信号从频域到时域的变换可使用WOLA方法，如先前所描述。
在步骤410处，可由内插器110处理经变换信号(基于由频域波束成形器108产生的信号)。特定来说，内插器110可通过特定因数将由频域波束成形器108产生的信号上取样到较高取样速率。在实施例中，内插器110可通过因数2将信号上取样到48kHz取样速率。在其它实施例中，内插器110可通过不同因数将信号上取样到另一适当取样速率。
在步骤412处，低通滤波器122可对来自内插器110的经上取样信号进行滤波，且产生提供到输出产生单元122的第二经波束成形信号。输出产生单元122可在过程200的步骤210处组合第一与第二经波束成形信号，如先前所描述。低通滤波器122可经配置以使经上取样信号的具有较低频率范围(例如，0kHz的12kHz)中的频率的分量通过。
应注意，虽然图2到4描述音频信号可划分成较高频带信号、较低频带信号的较低频率分量及较低频带信号的较高频率分量的群组以供处理，但音频信号可基于任何适合频率范围划分成群组以供处理是经考虑及可能的。此外，在适当时，所述群组中的任一者可通过频域中的超方向性波束成形技术、频域中的延迟与加总波束成形技术及/或时域中的延迟与加总波束成形技术来处理。
图中的任何过程说明或框应理解为表示模块、分段或代码部分，其包含用于实施过程中的特定逻辑功能或步骤的一或多个可执行指令，且替代实施方案包含于本发明的实施例的范围内，其中功能可不以来自所展示或所论述的次序的次序执行，取决于所涉及的功能性，包含基本上同时执行或以相反次序执行，如所属领域的普通技术人员将理解。
本公开打算阐释如何塑造及使用根据本技术的各种实施例而非限制其真实、预期及清楚的范围及精神。前述说明并非打算为穷尽性的或限于所公开的精确形式。修改或变化依据以上教示而是可能的。挑选并描述实施例以提供对所描述的技术的原理及其实际应用的最佳说明，且使得所属领域的普通技术人员能够在各种实施例中且以如适于所考虑的特定用途的各种修改利用本技术。当根据清楚地、合法地且公正地授予的宽度解释时，如同可在本专利申请案及其全部等效内容的申请期间修订，所有此些修改及变化均在如由所附权利要求书所确定的实施例的范围内。

Claims (27)

1.一种波束成形系统，其包括：
第一波束成形器，其经配置以基于从多个音频信号导出的第一频带信号产生第一经波束成形信号，其中所述第一波束成形器经配置以使用第一波束成形技术处理所述第一频带信号；
第二波束成形器，其经配置以基于从所述多个音频信号导出的第二频带信号产生第二经波束成形信号，其中所述第二波束成形器经配置以使用第二波束成形技术处理所述第二频带信号；及
输出产生单元，其与所述第一及第二波束成形器通信，所述输出产生单元经配置以基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
2.根据权利要求1所述的波束成形系统，其中所述第一波束成形技术包括时域波束成形技术，且所述第二波束成形技术包括频域波束成形技术。
3.根据权利要求1所述的波束成形系统，
其中所述第二频带信号包括第一群组及第二群组，
其中所述第二波束成形技术包括第一频域波束成形技术及第二频域波束成形技术；且
其中所述第二波束成形器进一步经配置以使用所述第一频域波束成形技术处理所述第一群组且使用所述第二频域波束成形技术处理所述第二群组。
4.根据权利要求3所述的波束成形系统，其中所述第一及第二频域波束成形技术基于帧大小小于或等于频域变换的块大小的加权重叠相加(WOLA)方法。
5.根据权利要求4所述的波束成形系统，其中所述帧大小是可配置的。
6.根据权利要求3所述的波束成形系统，其进一步包括内插器，所述内插器经配置以基于通过所述第一及第二频域波束成形技术产生的信号产生所述第二经波束成形信号。
7.根据权利要求6所述的波束成形系统，其中所述内插器包括低通滤波器，所述低通滤波器经配置以将通过所述第一及第二频域波束成形技术产生的所述信号滤波成经滤波信号，且所述内插器进一步经配置以将所述经滤波信号转换成所述第二经波束成形信号。
8.根据权利要求1所述的波束成形系统，其中：
所述第一波束成形技术包括在时域中执行的延迟与加总波束成形技术；
所述第二频带信号包括第一群组及第二群组；且
所述第二波束成形器进一步经配置以使用在频域中执行的超方向性波束成形技术处理所述第一群组，且使用在所述频域中的延迟与加总波束成形技术处理所述第二群组。
9.根据权利要求8所述的波束成形系统，其中所述超方向性波束成形技术包括在所述频域中执行的最小方差无失真响应(MVDR)波束成形技术。
10.根据权利要求8所述的波束成形系统，其中：
所述第一频带信号包括较高频带信号；
所述第二频带信号包括较低频带信号；
所述较低频带信号的所述第一群组包括所述较低频带信号的较低频率分量；且
所述较低频带信号的所述第二群组包括所述较低频带信号的较高频率分量。
11.根据权利要求1所述的波束成形系统，其中所述第一频带信号包括较高频带信号，且所述第二频带信号包括较低频带信号。
12.根据权利要求1所述的波束成形系统，其进一步包括经配置以将所述多个音频信号转换成所述第二频带信号的抽取器。
13.根据权利要求12所述的波束成形系统，其中所述抽取器包括低通滤波器，所述低通滤波器经配置以将所述多个音频信号滤波成经滤波音频信号，且所述抽取器进一步经配置以将所述经滤波音频信号转换成所述第二频带信号。
14.一种方法，其包括：
接收多个音频信号；
使用第一波束成形技术基于从多个音频信号导出的第一频带信号产生第一经波束成形信号；
使用第二波束成形技术基于从多个音频信号导出的第二频带信号产生第二经波束成形信号；及
基于所述第一经波束成形信号及所述第二经波束成形信号产生经波束成形输出信号。
15.根据权利要求14所述的方法，其中所述第一波束成形技术包括时域波束成形技术，且所述第二波束成形技术包括频域波束成形技术。
16.根据权利要求14所述的方法，
其中所述第二频带信号包括第一群组及第二群组，
其中所述第二波束成形技术包括第一频域波束成形技术及第二频域波束成形技术；且
其中产生所述第二经波束成形信号包括使用所述第一频域波束成形技术处理所述第一群组及使用所述第二频域波束成形技术处理所述第二群组。
17.根据权利要求16所述的方法，其中所述第一及第二频域波束成形技术基于帧大小小于或等于频域变换的块大小的加权重叠相加(WOLA)方法。
18.根据权利要求17所述的方法，其中所述帧大小是可配置的。
19.根据权利要求16所述的方法，其中产生所述第二经波束成形信号包括对通过所述第一及第二频域波束成形技术产生的信号进行内插以产生所述第二经波束成形信号。
20.根据权利要求19所述的方法，其中对所述信号进行内插包括：
将通过所述第一及第二频域波束成形技术产生的所述信号低通滤波成经滤波信号；及
将所述经滤波信号转换成所述第二经波束成形信号。
21.根据权利要求14所述的方法，其中：
所述第一波束成形技术包括在时域中执行的延迟与加总波束成形技术；
所述第二频带信号包括第一群组及第二群组；且
其中产生所述第二经波束成形信号包括使用在频域中执行的超方向性波束成形技术处理所述第一群组，及使用在所述频域中的延迟与加总波束成形技术处理所述第二群组。
22.根据权利要求21所述的方法，其中所述超方向性波束成形技术包括在所述频域中执行的最小方差无失真响应(MVDR)波束成形技术。
23.根据权利要求21所述的方法，其中：
所述第一频带信号包括较高频带信号；
所述第二频带信号包括较低频带信号；
所述较低频带信号的所述第一群组包括所述较低频带信号的较低频率分量；且
所述较低频带信号的所述第二群组包括所述较低频带信号的较高频率分量。
24.根据权利要求14所述的方法，其中所述第一频带信号包括较高频带信号，且所述第二频带信号包括较低频带信号。
25.根据权利要求14所述的方法，其进一步包括将所述多个音频信号抽取到所述第二频带信号中。
26.根据权利要求25所述的方法，其中对所述多个音频信号进行抽取包括：
将所述多个音频信号低通滤波成经滤波音频信号；及
将所述经滤波音频信号转换成所述第二频带信号。
27.一种阵列麦克风，其包括：
多个麦克风元件，其各自经配置以产生多个音频信号中的一者；及
波束成形器，其经配置以基于所述多个音频信号产生经波束成形输出信号，其中所述波束成形器包括多个波束成形器，所述多个波束成形器各自经配置以使用不同的波束成形技术处理相应频带信号，且其中所述频带信号是从多个音频信号导出。
CN202280016286.5A 2021-01-28 2022-01-27 混合音频波束成形系统 Pending CN116918351A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202163142711P 2021-01-28 2021-01-28
US63/142,711 2021-01-28
PCT/US2022/014061 WO2022165007A1 (en) 2021-01-28 2022-01-27 Hybrid audio beamforming system

Publications (1)

Publication Number Publication Date
CN116918351A true CN116918351A (zh) 2023-10-20

Family

ID=80447931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280016286.5A Pending CN116918351A (zh) 2021-01-28 2022-01-27 混合音频波束成形系统

Country Status (5)

Country Link
US (1) US11785380B2 (zh)
EP (1) EP4285605A1 (zh)
JP (1) JP2024505068A (zh)
CN (1) CN116918351A (zh)
WO (1) WO2022165007A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024128519A1 (ko) * 2022-12-13 2024-06-20 엘지전자 주식회사 무선 미디어 장치 및 이를 구비하는 영상표시장치

Family Cites Families (977)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535408A (en) 1923-03-31 1925-04-28 Charles F Fricke Display device
US1540788A (en) 1924-10-24 1925-06-09 Mcclure Edward Border frame for open-metal-work panels and the like
US1965830A (en) 1933-03-18 1934-07-10 Reginald B Hammer Acoustic device
US2113219A (en) 1934-05-31 1938-04-05 Rca Corp Microphone
US2075588A (en) 1936-06-22 1937-03-30 James V Lewis Mirror and picture frame
US2233412A (en) 1937-07-03 1941-03-04 Willis C Hill Metallic window screen
US2164655A (en) 1937-10-28 1939-07-04 Bertel J Kleerup Stereopticon slide and method and means for producing same
US2268529A (en) 1938-11-21 1941-12-30 Alfred H Stiles Picture mounting means
US2343037A (en) 1941-02-27 1944-02-29 William I Adelman Frame
US2377449A (en) 1943-02-02 1945-06-05 Joseph M Prevette Combination screen and storm door and window
US2539671A (en) 1946-02-28 1951-01-30 Rca Corp Directional microphone
US2521603A (en) 1947-03-26 1950-09-05 Pru Lesco Inc Picture frame securing means
US2481250A (en) 1948-05-20 1949-09-06 Gen Motors Corp Engine starting apparatus
US2533565A (en) 1948-07-03 1950-12-12 John M Eichelman Display device having removable nonrigid panel
US2828508A (en) 1954-02-01 1958-04-01 Specialites Alimentaires Bourg Machine for injection-moulding of plastic articles
US2777232A (en) 1954-11-10 1957-01-15 Robert M Kulicke Picture frame
US2912605A (en) 1955-12-05 1959-11-10 Tibbetts Lab Inc Electromechanical transducer
US2938113A (en) 1956-03-17 1960-05-24 Schneil Heinrich Radio receiving set and housing therefor
US2840181A (en) 1956-08-07 1958-06-24 Benjamin H Wildman Loudspeaker cabinet
US2882633A (en) 1957-07-26 1959-04-21 Arlington Aluminum Co Poster holder
US2950556A (en) 1958-11-19 1960-08-30 William E Ford Foldable frame
US3019854A (en) 1959-10-12 1962-02-06 Waitus A O'bryant Filter for heating and air conditioning ducts
US3132713A (en) 1961-05-25 1964-05-12 Shure Bros Microphone diaphragm
US3240883A (en) 1961-05-25 1966-03-15 Shure Bros Microphone
US3143182A (en) 1961-07-17 1964-08-04 E J Mosher Sound reproducers
US3160225A (en) 1962-04-18 1964-12-08 Edward L Sechrist Sound reproduction system
US3161975A (en) 1962-11-08 1964-12-22 John L Mcmillan Picture frame
US3205601A (en) 1963-06-11 1965-09-14 Gawne Daniel Display holder
US3239973A (en) 1964-01-24 1966-03-15 Johns Manville Acoustical glass fiber panel with diaphragm action and controlled flow resistance
US3906431A (en) 1965-04-09 1975-09-16 Us Navy Search and track sonar system
US3310901A (en) 1965-06-15 1967-03-28 Sarkisian Robert Display holder
US3321170A (en) 1965-09-21 1967-05-23 Earl F Vye Magnetic adjustable pole piece strip heater clamp
US3509290A (en) 1966-05-03 1970-04-28 Nippon Musical Instruments Mfg Flat-plate type loudspeaker with frame mounted drivers
DE1772445A1 (de) 1968-05-16 1971-03-04 Niezoldi & Kraemer Gmbh Kamera mit eingebauten,in den Strahlengang des Aufnahmelichts bewegbaren Farbfiltern
US3573399A (en) 1968-08-14 1971-04-06 Bell Telephone Labor Inc Directional microphone
AT284927B (de) 1969-03-04 1970-10-12 Eumig Rohrrichtmikrophon
JPS5028944B1 (zh) 1970-12-04 1975-09-19
US3857191A (en) 1971-02-08 1974-12-31 Talkies Usa Inc Visual-audio device
US3696885A (en) 1971-08-19 1972-10-10 Electronic Res Ass Decorative loudspeakers
US3755625A (en) 1971-10-12 1973-08-28 Bell Telephone Labor Inc Multimicrophone loudspeaking telephone system
JPS4867579U (zh) 1971-11-27 1973-08-27
US3936606A (en) 1971-12-07 1976-02-03 Wanke Ronald L Acoustic abatement method and apparatus
US3828508A (en) 1972-07-31 1974-08-13 W Moeller Tile device for joining permanent ceiling tile to removable ceiling tile
US3895194A (en) 1973-05-29 1975-07-15 Thermo Electron Corp Directional condenser electret microphone
US3938617A (en) 1974-01-17 1976-02-17 Fort Enterprises, Limited Speaker enclosure
JPS5215972B2 (zh) 1974-02-28 1977-05-06
US4029170A (en) 1974-09-06 1977-06-14 B & P Enterprises, Inc. Radial sound port speaker
US3941638A (en) 1974-09-18 1976-03-02 Reginald Patrick Horky Manufactured relief-sculptured sound grills (used for covering the sound producing side and/or front of most manufactured sound speaker enclosures) and the manufacturing process for the said grills
US4212133A (en) 1975-03-14 1980-07-15 Lufkin Lindsey D Picture frame vase
US3992584A (en) 1975-05-09 1976-11-16 Dugan Daniel W Automatic microphone mixer
US4007461A (en) 1975-09-05 1977-02-08 Field Operations Bureau Of The Federal Communications Commission Antenna system for deriving cardiod patterns
US4070547A (en) 1976-01-08 1978-01-24 Superscope, Inc. One-point stereo microphone
US4072821A (en) 1976-05-10 1978-02-07 Cbs Inc. Microphone system for producing signals for quadraphonic reproduction
JPS536565U (zh) 1976-07-02 1978-01-20
US4032725A (en) 1976-09-07 1977-06-28 Motorola, Inc. Speaker mounting
US4096353A (en) 1976-11-02 1978-06-20 Cbs Inc. Microphone system for producing signals for quadraphonic reproduction
US4169219A (en) 1977-03-30 1979-09-25 Beard Terry D Compander noise reduction method and apparatus
FR2390864A1 (fr) 1977-05-09 1978-12-08 France Etat Systeme d'audioconference par liaison telephonique
IE47296B1 (en) 1977-11-03 1984-02-08 Post Office Improvements in or relating to audio teleconferencing
USD255234S (en) 1977-11-22 1980-06-03 Ronald Wellward Ceiling speaker
US4131760A (en) 1977-12-07 1978-12-26 Bell Telephone Laboratories, Incorporated Multiple microphone dereverberation system
US4127156A (en) 1978-01-03 1978-11-28 Brandt James R Burglar-proof screening
USD256015S (en) 1978-03-20 1980-07-22 Epicure Products, Inc. Loudspeaker mounting bracket
DE2821294B2 (de) 1978-05-16 1980-03-13 Deutsche Texaco Ag, 2000 Hamburg Phenolaldehydharz, Verfahren zu seiner Herstellung und seine Verwendung
JPS54157617A (en) 1978-05-31 1979-12-12 Kyowa Electric & Chemical Method of manufacturing cloth coated speaker box and material therefor
US4198705A (en) 1978-06-09 1980-04-15 The Stoneleigh Trust, Donald P. Massa and Fred M. Dellorfano, Trustees Directional energy receiving systems for use in the automatic indication of the direction of arrival of the received signal
US4305141A (en) 1978-06-09 1981-12-08 The Stoneleigh Trust Low-frequency directional sonar systems
US4334740A (en) 1978-09-12 1982-06-15 Polaroid Corporation Receiving system having pre-selected directional response
JPS5546033A (en) 1978-09-27 1980-03-31 Nissan Motor Co Ltd Electronic control fuel injection system
JPS5910119B2 (ja) 1979-04-26 1984-03-07 日本ビクター株式会社 可変指向性マイクロホン
US4254417A (en) 1979-08-20 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Beamformer for arrays with rotational symmetry
DE2941485A1 (de) 1979-10-10 1981-04-23 Hans-Josef 4300 Essen Hasenäcker Hoererlose fernsprechzelle
SE418665B (sv) 1979-10-16 1981-06-15 Gustav Georg Arne Bolin Sett att forbettra akustiken i en lokal
JPS5685173U (zh) 1979-11-30 1981-07-08
US4311874A (en) 1979-12-17 1982-01-19 Bell Telephone Laboratories, Incorporated Teleconference microphone arrays
US4330691A (en) 1980-01-31 1982-05-18 The Futures Group, Inc. Integral ceiling tile-loudspeaker system
US4296280A (en) 1980-03-17 1981-10-20 Richie Ronald A Wall mounted speaker system
JPS5710598A (en) 1980-06-20 1982-01-20 Sony Corp Transmitting circuit of microphone output
US4373191A (en) 1980-11-10 1983-02-08 Motorola Inc. Absolute magnitude difference function generator for an LPC system
US4393631A (en) 1980-12-03 1983-07-19 Krent Edward D Three-dimensional acoustic ceiling tile system for dispersing long wave sound
US4365449A (en) 1980-12-31 1982-12-28 James P. Liautaud Honeycomb framework system for drop ceilings
AT371969B (de) 1981-11-19 1983-08-25 Akg Akustische Kino Geraete Mikrophon zur stereophonischen aufnahme akustischer ereignisse
US4436966A (en) 1982-03-15 1984-03-13 Darome, Inc. Conference microphone unit
US4429850A (en) 1982-03-25 1984-02-07 Uniweb, Inc. Display panel shelf bracket
US4449238A (en) 1982-03-25 1984-05-15 Bell Telephone Laboratories, Incorporated Voice-actuated switching system
DE3331440C2 (de) 1982-09-01 1987-04-23 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Phasengesteuerte Schallaufnehmeranordnung mit im wesentlichen langgestreckter Anordnung von Mikrofonen
US4489442A (en) 1982-09-30 1984-12-18 Shure Brothers, Inc. Sound actuated microphone system
US4485484A (en) 1982-10-28 1984-11-27 At&T Bell Laboratories Directable microphone system
US4518826A (en) 1982-12-22 1985-05-21 Mountain Systems, Inc. Vandal-proof communication system
FR2542549B1 (fr) 1983-03-09 1987-09-04 Lemaitre Guy Diffuseur acoustique en angle plan
US4669108A (en) 1983-05-23 1987-05-26 Teleconferencing Systems International Inc. Wireless hands-free conference telephone system
USD285067S (en) 1983-07-18 1986-08-12 Pascal Delbuck Loudspeaker
CA1202713A (en) 1984-03-16 1986-04-01 Beverley W. Gumb Transmitter assembly for a telephone handset
US4712231A (en) 1984-04-06 1987-12-08 Shure Brothers, Inc. Teleconference system
US4696043A (en) 1984-08-24 1987-09-22 Victor Company Of Japan, Ltd. Microphone apparatus having a variable directivity pattern
US4675906A (en) 1984-12-20 1987-06-23 At&T Company, At&T Bell Laboratories Second order toroidal microphone
US4658425A (en) 1985-04-19 1987-04-14 Shure Brothers, Inc. Microphone actuation control system suitable for teleconference systems
US4815132A (en) 1985-08-30 1989-03-21 Kabushiki Kaisha Toshiba Stereophonic voice signal transmission system
CA1236607A (en) 1985-09-23 1988-05-10 Northern Telecom Limited Microphone arrangement
US4625827A (en) 1985-10-16 1986-12-02 Crown International, Inc. Microphone windscreen
US4653102A (en) 1985-11-05 1987-03-24 Position Orientation Systems Directional microphone system
US4693174A (en) 1986-05-09 1987-09-15 Anderson Philip K Air deflecting means for use with air outlets defined in dropped ceiling constructions
US4860366A (en) 1986-07-31 1989-08-22 Nec Corporation Teleconference system using expanders for emphasizing a desired signal with respect to undesired signals
US4741038A (en) 1986-09-26 1988-04-26 American Telephone And Telegraph Company, At&T Bell Laboratories Sound location arrangement
JPH0657079B2 (ja) 1986-12-08 1994-07-27 日本電信電話株式会社 複数対のマイクロホン出力の位相切替収音装置
US4862507A (en) 1987-01-16 1989-08-29 Shure Brothers, Inc. Microphone acoustical polar pattern converter
NL8701633A (nl) 1987-07-10 1989-02-01 Philips Nv Digitale echocompensator.
US4805730A (en) 1988-01-11 1989-02-21 Peavey Electronics Corporation Loudspeaker enclosure
US4866868A (en) 1988-02-24 1989-09-19 Ntg Industries, Inc. Display device
JPH01260967A (ja) 1988-04-11 1989-10-18 Nec Corp 多チヤネル信号用音声会議装置
US4969197A (en) 1988-06-10 1990-11-06 Murata Manufacturing Piezoelectric speaker
JP2748417B2 (ja) 1988-07-30 1998-05-06 ソニー株式会社 マイクロホン装置
US4881135A (en) 1988-09-23 1989-11-14 Heilweil Jordan B Concealed audio-video apparatus for recording conferences and meetings
US4928312A (en) 1988-10-17 1990-05-22 Amel Hill Acoustic transducer
US4888807A (en) 1989-01-18 1989-12-19 Audio-Technica U.S., Inc. Variable pattern microphone system
JPH0728470B2 (ja) 1989-02-03 1995-03-29 松下電器産業株式会社 アレイマイクロホン
USD329239S (en) 1989-06-26 1992-09-08 PRS, Inc. Recessed speaker grill
US4923032A (en) 1989-07-21 1990-05-08 Nuernberger Mark A Ceiling panel sound system
US5000286A (en) 1989-08-15 1991-03-19 Klipsch And Associates, Inc. Modular loudspeaker system
USD324780S (en) 1989-09-27 1992-03-24 Sebesta Walter C Combined picture frame and golf ball rack
US5121426A (en) 1989-12-22 1992-06-09 At&T Bell Laboratories Loudspeaking telephone station including directional microphone
US5038935A (en) 1990-02-21 1991-08-13 Uniek Plastics, Inc. Storage and display unit for photographic prints
US5088574A (en) 1990-04-16 1992-02-18 Kertesz Iii Emery Ceiling speaker system
AT407815B (de) 1990-07-13 2001-06-25 Viennatone Gmbh Hörgerät
US5550925A (en) 1991-01-07 1996-08-27 Canon Kabushiki Kaisha Sound processing device
JP2792252B2 (ja) 1991-03-14 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
US5224170A (en) * 1991-04-15 1993-06-29 Hewlett-Packard Company Time domain compensation for transducer mismatch
US5204907A (en) 1991-05-28 1993-04-20 Motorola, Inc. Noise cancelling microphone and boot mounting arrangement
US5353279A (en) 1991-08-29 1994-10-04 Nec Corporation Echo canceler
USD345346S (en) 1991-10-18 1994-03-22 International Business Machines Corp. Pen-based computer
US5189701A (en) 1991-10-25 1993-02-23 Micom Communications Corp. Voice coder/decoder and methods of coding/decoding
USD340718S (en) 1991-12-20 1993-10-26 Square D Company Speaker frame assembly
US5289544A (en) 1991-12-31 1994-02-22 Audiological Engineering Corporation Method and apparatus for reducing background noise in communication systems and for enhancing binaural hearing systems for the hearing impaired
US5322979A (en) 1992-01-08 1994-06-21 Cassity Terry A Speaker cover assembly
JP2792311B2 (ja) 1992-01-31 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
JPH05260589A (ja) 1992-03-10 1993-10-08 Nippon Hoso Kyokai <Nhk> 焦点収音方法
US5297210A (en) 1992-04-10 1994-03-22 Shure Brothers, Incorporated Microphone actuation control system
USD345379S (en) 1992-07-06 1994-03-22 Canadian Moulded Products Inc. Card holder
US5383293A (en) 1992-08-27 1995-01-24 Royal; John D. Picture frame arrangement
JPH06104970A (ja) 1992-09-18 1994-04-15 Fujitsu Ltd 拡声電話機
US5307405A (en) 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5400413A (en) 1992-10-09 1995-03-21 Dana Innovations Pre-formed speaker grille cloth
IT1257164B (it) 1992-10-23 1996-01-05 Ist Trentino Di Cultura Procedimento per la localizzazione di un parlatore e l'acquisizione diun messaggio vocale, e relativo sistema.
JP2508574B2 (ja) 1992-11-10 1996-06-19 日本電気株式会社 多チャンネルエコ―除去装置
US5406638A (en) 1992-11-25 1995-04-11 Hirschhorn; Bruce D. Automated conference system
US5359374A (en) 1992-12-14 1994-10-25 Talking Frames Corp. Talking picture frames
US5335011A (en) 1993-01-12 1994-08-02 Bell Communications Research, Inc. Sound localization system for teleconferencing using self-steering microphone arrays
US5329593A (en) 1993-05-10 1994-07-12 Lazzeroni John J Noise cancelling microphone
US5555447A (en) 1993-05-14 1996-09-10 Motorola, Inc. Method and apparatus for mitigating speech loss in a communication system
JPH084243B2 (ja) 1993-05-31 1996-01-17 日本電気株式会社 多チャンネルエコー除去方法および装置
EP0707763B1 (en) 1993-07-07 2001-08-29 Picturetel Corporation Reduction of background noise for speech enhancement
US5657393A (en) 1993-07-30 1997-08-12 Crow; Robert P. Beamed linear array microphone system
DE4330243A1 (de) 1993-09-07 1995-03-09 Philips Patentverwaltung Sprachverarbeitungseinrichtung
US5525765A (en) 1993-09-08 1996-06-11 Wenger Corporation Acoustical virtual environment
US5664021A (en) 1993-10-05 1997-09-02 Picturetel Corporation Microphone system for teleconferencing system
US5473701A (en) 1993-11-05 1995-12-05 At&T Corp. Adaptive microphone array
USD363045S (en) 1994-03-29 1995-10-10 Phillips Verla D Wall plaque
JPH07336790A (ja) 1994-06-13 1995-12-22 Nec Corp マイクロホンシステム
US5509634A (en) 1994-09-28 1996-04-23 Femc Ltd. Self adjusting glass shelf label holder
JP3397269B2 (ja) 1994-10-26 2003-04-14 日本電信電話株式会社 多チャネル反響消去方法
NL9401860A (nl) 1994-11-08 1996-06-03 Duran Bv Luidsprekersysteem met bestuurde richtinggevoeligheid.
US5633936A (en) 1995-01-09 1997-05-27 Texas Instruments Incorporated Method and apparatus for detecting a near-end speech signal
US5645257A (en) 1995-03-31 1997-07-08 Metro Industries, Inc. Adjustable support apparatus
USD382118S (en) 1995-04-17 1997-08-12 Kimberly-Clark Tissue Company Paper towel
US6731334B1 (en) 1995-07-31 2004-05-04 Forgent Networks, Inc. Automatic voice tracking camera system and method of operation
WO1997008896A1 (en) 1995-08-23 1997-03-06 Scientific-Atlanta, Inc. Open area security system
US6215881B1 (en) 1995-09-02 2001-04-10 New Transducers Limited Ceiling tile loudspeaker
US6198831B1 (en) 1995-09-02 2001-03-06 New Transducers Limited Panel-form loudspeakers
US6285770B1 (en) 1995-09-02 2001-09-04 New Transducers Limited Noticeboards incorporating loudspeakers
KR19990044170A (ko) 1995-09-02 1999-06-25 헨리 에이지마 패널형 라우드스피커
DE69628618T2 (de) 1995-09-26 2004-05-13 Nippon Telegraph And Telephone Corp. Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
US5766702A (en) 1995-10-05 1998-06-16 Lin; Chii-Hsiung Laminated ornamental glass
US5768263A (en) 1995-10-20 1998-06-16 Vtel Corporation Method for talk/listen determination and multipoint conferencing system using such method
US6125179A (en) 1995-12-13 2000-09-26 3Com Corporation Echo control device with quick response to sudden echo-path change
US6144746A (en) 1996-02-09 2000-11-07 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
US5888412A (en) 1996-03-04 1999-03-30 Motorola, Inc. Method for making a sculptured diaphragm
US5673327A (en) 1996-03-04 1997-09-30 Julstrom; Stephen D. Microphone mixer
US5706344A (en) 1996-03-29 1998-01-06 Digisonix, Inc. Acoustic echo cancellation in an integrated audio and telecommunication system
US5717171A (en) 1996-05-09 1998-02-10 The Solar Corporation Acoustical cabinet grille frame
US5848146A (en) 1996-05-10 1998-12-08 Rane Corporation Audio system for conferencing/presentation room
US6205224B1 (en) 1996-05-17 2001-03-20 The Boeing Company Circularly symmetric, zero redundancy, planar array having broad frequency range applications
US5715319A (en) 1996-05-30 1998-02-03 Picturetel Corporation Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
US5796819A (en) 1996-07-24 1998-08-18 Ericsson Inc. Echo canceller for non-linear circuits
KR100212314B1 (ko) 1996-11-06 1999-08-02 윤종용 액정 디스플레이 장치의 스탠드구조
US5888439A (en) 1996-11-14 1999-03-30 The Solar Corporation Method of molding an acoustical cabinet grille frame
JP3797751B2 (ja) 1996-11-27 2006-07-19 富士通株式会社 マイクロホンシステム
US6798890B2 (en) 2000-10-05 2004-09-28 Etymotic Research, Inc. Directional microphone assembly
US5878147A (en) 1996-12-31 1999-03-02 Etymotic Research, Inc. Directional microphone assembly
US7881486B1 (en) 1996-12-31 2011-02-01 Etymotic Research, Inc. Directional microphone assembly
US6301357B1 (en) 1996-12-31 2001-10-09 Ericsson Inc. AC-center clipper for noise and echo suppression in a communications system
US6151399A (en) 1996-12-31 2000-11-21 Etymotic Research, Inc. Directional microphone system providing for ease of assembly and disassembly
US5870482A (en) 1997-02-25 1999-02-09 Knowles Electronics, Inc. Miniature silicon condenser microphone
USD392977S (en) 1997-03-11 1998-03-31 LG Fosta Ltd. Speaker
US6041127A (en) 1997-04-03 2000-03-21 Lucent Technologies Inc. Steerable and variable first-order differential microphone array
FR2762467B1 (fr) 1997-04-16 1999-07-02 France Telecom Procede d'annulation d'echo acoustique multi-voies et annuleur d'echo acoustique multi-voies
WO1998047291A2 (en) 1997-04-16 1998-10-22 Isight Ltd. Video teleconferencing
US6633647B1 (en) 1997-06-30 2003-10-14 Hewlett-Packard Development Company, L.P. Method of custom designing directional responses for a microphone of a portable computer
USD394061S (en) 1997-07-01 1998-05-05 Windsor Industries, Inc. Combined computer-style radio and alarm clock
US6137887A (en) 1997-09-16 2000-10-24 Shure Incorporated Directional microphone system
NL1007321C2 (nl) 1997-10-20 1999-04-21 Univ Delft Tech Gehoorinrichting voor het verbeteren van de verstaanbaarheid voor slechthorenden.
US6563803B1 (en) 1997-11-26 2003-05-13 Qualcomm Incorporated Acoustic echo canceller
US6039457A (en) 1997-12-17 2000-03-21 Intex Exhibits International, L.L.C. Light bracket
US6393129B1 (en) 1998-01-07 2002-05-21 American Technology Corporation Paper structures for speaker transducers
US6505057B1 (en) 1998-01-23 2003-01-07 Digisonix Llc Integrated vehicle voice enhancement system and hands-free cellular telephone system
EP1057164A1 (en) 1998-02-20 2000-12-06 Display Edge Technology, Ltd. Shelf-edge display system
US6895093B1 (en) 1998-03-03 2005-05-17 Texas Instruments Incorporated Acoustic echo-cancellation system
US6553122B1 (en) 1998-03-05 2003-04-22 Nippon Telegraph And Telephone Corporation Method and apparatus for multi-channel acoustic echo cancellation and recording medium with the method recorded thereon
WO1999053674A1 (en) 1998-04-08 1999-10-21 British Telecommunications Public Limited Company Echo cancellation
US6173059B1 (en) 1998-04-24 2001-01-09 Gentner Communications Corporation Teleconferencing system with visual feedback
EP0993674B1 (en) 1998-05-11 2006-08-16 Philips Electronics N.V. Pitch detection
US6442272B1 (en) 1998-05-26 2002-08-27 Tellabs, Inc. Voice conferencing system having local sound amplification
US6266427B1 (en) 1998-06-19 2001-07-24 Mcdonnell Douglas Corporation Damped structural panel and method of making same
USD416315S (en) 1998-09-01 1999-11-09 Fujitsu General Limited Air conditioner
USD424538S (en) 1998-09-14 2000-05-09 Fujitsu General Limited Display device
US6049607A (en) 1998-09-18 2000-04-11 Lamar Signal Processing Interference canceling method and apparatus
US6424635B1 (en) 1998-11-10 2002-07-23 Nortel Networks Limited Adaptive nonlinear processor for echo cancellation
US6526147B1 (en) 1998-11-12 2003-02-25 Gn Netcom A/S Microphone array with high directivity
US7068801B1 (en) 1998-12-18 2006-06-27 National Research Council Of Canada Microphone array diffracting structure
KR100298300B1 (ko) 1998-12-29 2002-05-01 강상훈 포만트유사도측정에의한피솔라를이용한음성파형부호화방식
US6507659B1 (en) 1999-01-25 2003-01-14 Cascade Audio, Inc. Microphone apparatus for producing signals for surround reproduction
US6035962A (en) 1999-02-24 2000-03-14 Lin; Chih-Hsiung Easily-combinable and movable speaker case
US7423983B1 (en) 1999-09-20 2008-09-09 Broadcom Corporation Voice and data exchange over a packet based network
US7558381B1 (en) 1999-04-22 2009-07-07 Agere Systems Inc. Retrieval of deleted voice messages in voice messaging system
JP3789685B2 (ja) 1999-07-02 2006-06-28 富士通株式会社 マイクロホンアレイ装置
US6889183B1 (en) 1999-07-15 2005-05-03 Nortel Networks Limited Apparatus and method of regenerating a lost audio segment
US20050286729A1 (en) 1999-07-23 2005-12-29 George Harwood Flat speaker with a flat membrane diaphragm
AU7538000A (en) 1999-09-29 2001-04-30 1... Limited Method and apparatus to direct sound
USD432518S (en) 1999-10-01 2000-10-24 Keiko Muto Audio system
US6868377B1 (en) 1999-11-23 2005-03-15 Creative Technology Ltd. Multiband phase-vocoder for the modification of audio or speech signals
US6704423B2 (en) 1999-12-29 2004-03-09 Etymotic Research, Inc. Hearing aid assembly having external directional microphone
US6449593B1 (en) 2000-01-13 2002-09-10 Nokia Mobile Phones Ltd. Method and system for tracking human speakers
US20020140633A1 (en) 2000-02-03 2002-10-03 Canesta, Inc. Method and system to present immersion virtual simulations using three-dimensional measurement
US6488367B1 (en) 2000-03-14 2002-12-03 Eastman Kodak Company Electroformed metal diaphragm
US6741720B1 (en) 2000-04-19 2004-05-25 Russound/Fmp, Inc. In-wall loudspeaker system
US6993126B1 (en) 2000-04-28 2006-01-31 Clearsonics Pty Ltd Apparatus and method for detecting far end speech
WO2001093554A2 (en) 2000-05-26 2001-12-06 Koninklijke Philips Electronics N.V. Method and device for acoustic echo cancellation combined with adaptive beamforming
AU783014B2 (en) 2000-06-15 2005-09-15 Valcom, Inc Lay-in ceiling speaker
US6329908B1 (en) 2000-06-23 2001-12-11 Armstrong World Industries, Inc. Addressable speaker system
US6622030B1 (en) 2000-06-29 2003-09-16 Ericsson Inc. Echo suppression using adaptive gain based on residual echo energy
US8019091B2 (en) 2000-07-19 2011-09-13 Aliphcom, Inc. Voice activity detector (VAD) -based multiple-microphone acoustic noise suppression
USD453016S1 (en) 2000-07-20 2002-01-22 B & W Loudspeakers Limited Loudspeaker unit
US6386315B1 (en) 2000-07-28 2002-05-14 Awi Licensing Company Flat panel sound radiator and assembly system
US6481173B1 (en) 2000-08-17 2002-11-19 Awi Licensing Company Flat panel sound radiator with special edge details
US6510919B1 (en) 2000-08-30 2003-01-28 Awi Licensing Company Facing system for a flat panel radiator
DE60010457T2 (de) 2000-09-02 2006-03-02 Nokia Corp. Vorrichtung und Verfahren zur Verarbeitung eines Signales emittiert von einer Zielsignalquelle in einer geräuschvollen Umgebung
US6968064B1 (en) 2000-09-29 2005-11-22 Forgent Networks, Inc. Adaptive thresholds in acoustic echo canceller for use during double talk
GB2367730B (en) 2000-10-06 2005-04-27 Mitel Corp Method and apparatus for minimizing far-end speech effects in hands-free telephony systems using acoustic beamforming
US6963649B2 (en) 2000-10-24 2005-11-08 Adaptive Technologies, Inc. Noise cancelling microphone
EP1202602B1 (en) 2000-10-25 2013-05-15 Panasonic Corporation Zoom microphone device
US6704422B1 (en) 2000-10-26 2004-03-09 Widex A/S Method for controlling the directionality of the sound receiving characteristic of a hearing aid a hearing aid for carrying out the method
US6757393B1 (en) 2000-11-03 2004-06-29 Marie L. Spitzer Wall-hanging entertainment system
JP4110734B2 (ja) 2000-11-27 2008-07-02 沖電気工業株式会社 音声パケット通信の品質制御装置
US7092539B2 (en) 2000-11-28 2006-08-15 University Of Florida Research Foundation, Inc. MEMS based acoustic array
US7092882B2 (en) 2000-12-06 2006-08-15 Ncr Corporation Noise suppression in beam-steered microphone array
JP4734714B2 (ja) 2000-12-22 2011-07-27 ヤマハ株式会社 収音再生方法およびその装置
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
WO2002060057A1 (en) 2001-01-23 2002-08-01 Koninklijke Philips Electronics N.V. Asymmetric multichannel filter
USD474939S1 (en) 2001-02-20 2003-05-27 Wouter De Neubourg Mug I
US20020126861A1 (en) 2001-03-12 2002-09-12 Chester Colby Audio expander
US20020131580A1 (en) 2001-03-16 2002-09-19 Shure Incorporated Solid angle cross-talk cancellation for beamforming arrays
JP4445705B2 (ja) 2001-03-27 2010-04-07 １．．．リミテッド 音場を作り出す方法および装置
JP3506138B2 (ja) 2001-07-11 2004-03-15 ヤマハ株式会社 複数チャンネルエコーキャンセル方法、複数チャンネル音声伝送方法、ステレオエコーキャンセラ、ステレオ音声伝送装置および伝達関数演算装置
EP1413167A2 (en) 2001-07-20 2004-04-28 Koninklijke Philips Electronics N.V. Sound reinforcement system having an multi microphone echo suppressor as post processor
WO2003010996A2 (en) 2001-07-20 2003-02-06 Koninklijke Philips Electronics N.V. Sound reinforcement system having an echo suppressor and loudspeaker beamformer
US7013267B1 (en) 2001-07-30 2006-03-14 Cisco Technology, Inc. Method and apparatus for reconstructing voice information
US7068796B2 (en) 2001-07-31 2006-06-27 Moorer James A Ultra-directional microphones
JP3727258B2 (ja) 2001-08-13 2005-12-14 富士通株式会社 エコー抑制処理システム
GB2379148A (en) 2001-08-21 2003-02-26 Mitel Knowledge Corp Voice activity detection
GB0121206D0 (en) 2001-08-31 2001-10-24 Mitel Knowledge Corp System and method of indicating and controlling sound pickup direction and location in a teleconferencing system
US7298856B2 (en) 2001-09-05 2007-11-20 Nippon Hoso Kyokai Chip microphone and method of making same
US20030059061A1 (en) 2001-09-14 2003-03-27 Sony Corporation Audio input unit, audio input method and audio input and output unit
JP2003087890A (ja) 2001-09-14 2003-03-20 Sony Corp 音声入力装置及び音声入力方法
USD469090S1 (en) 2001-09-17 2003-01-21 Sharp Kabushiki Kaisha Monitor for a computer
JP3568922B2 (ja) 2001-09-20 2004-09-22 三菱電機株式会社 エコー処理装置
US7065224B2 (en) 2001-09-28 2006-06-20 Sonionmicrotronic Nederland B.V. Microphone for a hearing aid or listening device with improved internal damping and foreign material protection
US7120269B2 (en) 2001-10-05 2006-10-10 Lowell Manufacturing Company Lay-in tile speaker system
US7239714B2 (en) 2001-10-09 2007-07-03 Sonion Nederland B.V. Microphone having a flexible printed circuit board for mounting components
GB0124352D0 (en) 2001-10-11 2001-11-28 1 Ltd Signal processing device for acoustic transducer array
CA2359771A1 (en) 2001-10-22 2003-04-22 Dspfactory Ltd. Low-resource real-time audio synthesis system and method
JP4282260B2 (ja) 2001-11-20 2009-06-17 株式会社リコー エコーキャンセラ
US6665971B2 (en) 2001-11-27 2003-12-23 Fast Industries, Ltd. Label holder with dust cover
US7146016B2 (en) 2001-11-27 2006-12-05 Center For National Research Initiatives Miniature condenser microphone and fabrication method therefor
US20030107478A1 (en) 2001-12-06 2003-06-12 Hendricks Richard S. Architectural sound enhancement system
US7130430B2 (en) 2001-12-18 2006-10-31 Milsap Jeffrey P Phased array sound system
US6592237B1 (en) 2001-12-27 2003-07-15 John M. Pledger Panel frame to draw air around light fixtures
US20030122777A1 (en) 2001-12-31 2003-07-03 Grover Andrew S. Method and apparatus for configuring a computer system based on user distance
US7783063B2 (en) 2002-01-18 2010-08-24 Polycom, Inc. Digital linking of multiple microphone systems
US8098844B2 (en) 2002-02-05 2012-01-17 Mh Acoustics, Llc Dual-microphone spatial noise suppression
US7130309B2 (en) 2002-02-20 2006-10-31 Intel Corporation Communication device with dynamic delay compensation and method for communicating voice over a packet-switched network
US20030161485A1 (en) 2002-02-27 2003-08-28 Shure Incorporated Multiple beam automatic mixing microphone array processing via speech detection
DE10208465A1 (de) 2002-02-27 2003-09-18 Bsh Bosch Siemens Hausgeraete Elektrisches Gerät, insbesondere Dunstabzugshaube
US20030169888A1 (en) 2002-03-08 2003-09-11 Nikolas Subotic Frequency dependent acoustic beam forming and nulling
DK174558B1 (da) 2002-03-15 2003-06-02 Bruel & Kjaer Sound & Vibratio Stråleformende transducer-antennesystem
ITMI20020566A1 (it) 2002-03-18 2003-09-18 Daniele Ramenzoni Dispositivo per captare movimenti anche piccoli nell'aria e nei fluidi adatto per applicazioni cibernetiche e di laboratorio come trasduttor
US7245733B2 (en) 2002-03-20 2007-07-17 Siemens Hearing Instruments, Inc. Hearing instrument microphone arrangement with improved sensitivity
US7518737B2 (en) 2002-03-29 2009-04-14 Georgia Tech Research Corp. Displacement-measuring optical device with orifice
ITBS20020043U1 (it) 2002-04-12 2003-10-13 Flos Spa Giunto per il collegamento meccanico e elettrico di apparecchi di illuminazione in linea e/o ad angolo
US6912178B2 (en) 2002-04-15 2005-06-28 Polycom, Inc. System and method for computing a location of an acoustic source
US20030198339A1 (en) 2002-04-19 2003-10-23 Roy Kenneth P. Enhanced sound processing system for use with sound radiators
US20030202107A1 (en) 2002-04-30 2003-10-30 Slattery E. Michael Automated camera view control system
US7852369B2 (en) 2002-06-27 2010-12-14 Microsoft Corp. Integrated design for omni-directional camera and microphone array
US6882971B2 (en) 2002-07-18 2005-04-19 General Instrument Corporation Method and apparatus for improving listener differentiation of talkers during a conference call
GB2393601B (en) 2002-07-19 2005-09-21 1 Ltd Digital loudspeaker system
US8947347B2 (en) 2003-08-27 2015-02-03 Sony Computer Entertainment Inc. Controlling actions in a video game unit
US7050576B2 (en) 2002-08-20 2006-05-23 Texas Instruments Incorporated Double talk, NLP and comfort noise
JP4813796B2 (ja) 2002-09-17 2011-11-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 信号を合成するための方法、記憶媒体及びコンピュータシステム
AU2003299178A1 (en) 2002-10-01 2004-04-23 Donnelly Corporation Microphone system for vehicle
US7106876B2 (en) 2002-10-15 2006-09-12 Shure Incorporated Microphone for simultaneous noise sensing and speech pickup
US20080056517A1 (en) 2002-10-18 2008-03-06 The Regents Of The University Of California Dynamic binaural sound capture and reproduction in focued or frontal applications
US7003099B1 (en) 2002-11-15 2006-02-21 Fortmedia, Inc. Small array microphone for acoustic echo cancellation and noise suppression
US7672445B1 (en) 2002-11-15 2010-03-02 Fortemedia, Inc. Method and system for nonlinear echo suppression
US6990193B2 (en) 2002-11-29 2006-01-24 Mitel Knowledge Corporation Method of acoustic echo cancellation in full-duplex hands free audio conferencing with spatial directivity
GB2395878A (en) 2002-11-29 2004-06-02 Mitel Knowledge Corp Method of capturing constant echo path information using default coefficients
US7359504B1 (en) 2002-12-03 2008-04-15 Plantronics, Inc. Method and apparatus for reducing echo and noise
GB0229059D0 (en) 2002-12-12 2003-01-15 Mitel Knowledge Corp Method of broadband constant directivity beamforming for non linear and non axi-symmetric sensor arrays embedded in an obstacle
US7333476B2 (en) 2002-12-23 2008-02-19 Broadcom Corporation System and method for operating a packet voice far-end echo cancellation system
KR100480789B1 (ko) 2003-01-17 2005-04-06 삼성전자주식회사 피드백 구조를 이용한 적응적 빔 형성방법 및 장치
GB2397990A (en) 2003-01-31 2004-08-04 Mitel Networks Corp Echo cancellation/suppression and double-talk detection in communication paths
USD489707S1 (en) 2003-02-17 2004-05-11 Pioneer Corporation Speaker
GB0304126D0 (en) 2003-02-24 2003-03-26 1 Ltd Sound beam loudspeaker system
KR100493172B1 (ko) 2003-03-06 2005-06-02 삼성전자주식회사 마이크로폰 어레이 구조, 이를 이용한 일정한 지향성을갖는 빔 형성방법 및 장치와 음원방향 추정방법 및 장치
US20040240664A1 (en) 2003-03-07 2004-12-02 Freed Evan Lawrence Full-duplex speakerphone
US7466835B2 (en) 2003-03-18 2008-12-16 Sonion A/S Miniature microphone with balanced termination
US9099094B2 (en) 2003-03-27 2015-08-04 Aliphcom Microphone array with rear venting
US6988064B2 (en) 2003-03-31 2006-01-17 Motorola, Inc. System and method for combined frequency-domain and time-domain pitch extraction for speech signals
US7643641B2 (en) 2003-05-09 2010-01-05 Nuance Communications, Inc. System for communication enhancement in a noisy environment
US8724822B2 (en) 2003-05-09 2014-05-13 Nuance Communications, Inc. Noisy environment communication enhancement system
DE60325699D1 (de) 2003-05-13 2009-02-26 Harman Becker Automotive Sys Verfahren und System zur adaptiven Kompensation von Mikrofonungleichheiten
JP2004349806A (ja) 2003-05-20 2004-12-09 Nippon Telegr & Teleph Corp <Ntt> 多チャネル音響エコー消去方法、その装置、そのプログラム及びその記録媒体
US6993145B2 (en) 2003-06-26 2006-01-31 Multi-Service Corporation Speaker grille frame
US20050005494A1 (en) 2003-07-11 2005-01-13 Way Franklin B. Combination display frame
CA2475283A1 (en) 2003-07-17 2005-01-17 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre Method for recovery of lost speech data
GB0317158D0 (en) 2003-07-23 2003-08-27 Mitel Networks Corp A method to reduce acoustic coupling in audio conferencing systems
US8244536B2 (en) 2003-08-27 2012-08-14 General Motors Llc Algorithm for intelligent speech recognition
US7412376B2 (en) 2003-09-10 2008-08-12 Microsoft Corporation System and method for real-time detection and preservation of speech onset in a signal
US10218853B2 (en) 2010-07-15 2019-02-26 Gregory C. Burnett Wireless conference call telephone
CA2452945C (en) 2003-09-23 2016-05-10 Mcmaster University Binaural adaptive hearing system
US7162041B2 (en) 2003-09-30 2007-01-09 Etymotic Research, Inc. Noise canceling microphone with acoustically tuned ports
US20050213747A1 (en) 2003-10-07 2005-09-29 Vtel Products, Inc. Hybrid monaural and multichannel audio for conferencing
USD510729S1 (en) 2003-10-23 2005-10-18 Benq Corporation TV tuner box
US7190775B2 (en) 2003-10-29 2007-03-13 Broadcom Corporation High quality audio conferencing with adaptive beamforming
US8270585B2 (en) 2003-11-04 2012-09-18 Stmicroelectronics, Inc. System and method for an endpoint participating in and managing multipoint audio conferencing in a packet network
EP1695590B1 (en) 2003-12-01 2014-02-26 Wolfson Dynamic Hearing Pty Ltd. Method and apparatus for producing adaptive directional signals
WO2005057804A1 (en) 2003-12-10 2005-06-23 Koninklijke Philips Electronics N.V. Echo canceller having a series arrangement of adaptive filters with individual update control strategy
US7778425B2 (en) 2003-12-24 2010-08-17 Nokia Corporation Method for generating noise references for generalized sidelobe canceling
KR101086398B1 (ko) 2003-12-24 2011-11-25 삼성전자주식회사 다수의 마이크로폰을 이용한 지향성 제어 가능 스피커시스템 및 그 방법
JP2007522705A (ja) 2004-01-07 2007-08-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 音声歪み圧縮システム及びそのフィルター装置
JP4251077B2 (ja) 2004-01-07 2009-04-08 ヤマハ株式会社 スピーカ装置
US7387151B1 (en) 2004-01-23 2008-06-17 Payne Donald L Cabinet door with changeable decorative panel
DK176894B1 (da) 2004-01-29 2010-03-08 Dpa Microphones As Mikrofonstruktur med retningsvirkning
TWI289020B (en) 2004-02-06 2007-10-21 Fortemedia Inc Apparatus and method of a dual microphone communication device applied for teleconference system
US7515721B2 (en) 2004-02-09 2009-04-07 Microsoft Corporation Self-descriptive microphone array
JP2007523792A (ja) 2004-02-27 2007-08-23 ダイムラークライスラー・アクチェンゲゼルシャフト マイクロフォンを備えた自動車
DE602005014288D1 (de) 2004-03-01 2009-06-10 Dolby Lab Licensing Corp Mehrkanalige Audiodekodierung
US7415117B2 (en) 2004-03-02 2008-08-19 Microsoft Corporation System and method for beamforming using a microphone array
US7826205B2 (en) 2004-03-08 2010-11-02 Originatic Llc Electronic device having a movable input assembly with multiple input sides
USD504889S1 (en) 2004-03-17 2005-05-10 Apple Computer, Inc. Electronic device
US7346315B2 (en) 2004-03-30 2008-03-18 Motorola Inc Handheld device loudspeaker system
JP2005311988A (ja) 2004-04-26 2005-11-04 Onkyo Corp スピーカーシステム
WO2005125267A2 (en) 2004-05-05 2005-12-29 Southwest Research Institute Airborne collection of acoustic data using an unmanned aerial vehicle
JP2005323084A (ja) 2004-05-07 2005-11-17 Nippon Telegr & Teleph Corp <Ntt> 音響エコー消去方法、音響エコー消去装置、音響エコー消去プログラム
US8031853B2 (en) 2004-06-02 2011-10-04 Clearone Communications, Inc. Multi-pod conference systems
US7856097B2 (en) 2004-06-17 2010-12-21 Panasonic Corporation Echo canceling apparatus, telephone set using the same, and echo canceling method
US7352858B2 (en) 2004-06-30 2008-04-01 Microsoft Corporation Multi-channel echo cancellation with round robin regularization
WO2009009568A2 (en) 2007-07-09 2009-01-15 Mh Acoustics, Llc Augmented elliptical microphone array
TWI241790B (en) 2004-07-16 2005-10-11 Ind Tech Res Inst Hybrid beamforming apparatus and method for the same
DE602004017603D1 (de) 2004-09-03 2008-12-18 Harman Becker Automotive Sys Sprachsignalverarbeitung für die gemeinsame adaptive Reduktion von Störgeräuschen und von akustischen Echos
US20070230712A1 (en) 2004-09-07 2007-10-04 Koninklijke Philips Electronics, N.V. Telephony Device with Improved Noise Suppression
JP2006094389A (ja) 2004-09-27 2006-04-06 Yamaha Corp 車内会話補助装置
EP1643798B1 (en) 2004-10-01 2012-12-05 AKG Acoustics GmbH Microphone comprising two pressure-gradient capsules
US7970151B2 (en) 2004-10-15 2011-06-28 Lifesize Communications, Inc. Hybrid beamforming
US7760887B2 (en) 2004-10-15 2010-07-20 Lifesize Communications, Inc. Updating modeling information based on online data gathering
US7667728B2 (en) 2004-10-15 2010-02-23 Lifesize Communications, Inc. Video and audio conferencing system with spatial audio
US8116500B2 (en) 2004-10-15 2012-02-14 Lifesize Communications, Inc. Microphone orientation and size in a speakerphone
US7720232B2 (en) 2004-10-15 2010-05-18 Lifesize Communications, Inc. Speakerphone
USD526643S1 (en) 2004-10-19 2006-08-15 Pioneer Corporation Speaker
CN1780495A (zh) 2004-10-25 2006-05-31 宝利通公司 顶蓬麦克风组件
US7660428B2 (en) 2004-10-25 2010-02-09 Polycom, Inc. Ceiling microphone assembly
JP4697465B2 (ja) 2004-11-08 2011-06-08 日本電気株式会社 信号処理の方法、信号処理の装置および信号処理用プログラム
US20060109983A1 (en) 2004-11-19 2006-05-25 Young Randall K Signal masking and method thereof
US20060147063A1 (en) 2004-12-22 2006-07-06 Broadcom Corporation Echo cancellation in telephones with multiple microphones
USD526648S1 (en) 2004-12-23 2006-08-15 Apple Computer, Inc. Computing device
NO328256B1 (no) 2004-12-29 2010-01-18 Tandberg Telecom As Audiosystem
KR20060081076A (ko) 2005-01-07 2006-07-12 이재호 음성인식으로 층수를 지정하는 엘리베이터
US7830862B2 (en) 2005-01-07 2010-11-09 At&T Intellectual Property Ii, L.P. System and method for modifying speech playout to compensate for transmission delay jitter in a voice over internet protocol (VoIP) network
TWD111206S1 (zh) 2005-01-12 2006-06-01 聲學英國有限公司 揚聲器
EP1681670A1 (en) 2005-01-14 2006-07-19 Dialog Semiconductor GmbH Voice activation
US7995768B2 (en) 2005-01-27 2011-08-09 Yamaha Corporation Sound reinforcement system
WO2006093876A2 (en) 2005-03-01 2006-09-08 Todd Henry Electromagnetic lever diaphragm audio transducer
US8406435B2 (en) 2005-03-18 2013-03-26 Microsoft Corporation Audio submix management
US7522742B2 (en) 2005-03-21 2009-04-21 Speakercraft, Inc. Speaker assembly with moveable baffle
US20060222187A1 (en) 2005-04-01 2006-10-05 Scott Jarrett Microphone and sound image processing system
EP1708472B1 (en) 2005-04-01 2007-12-05 Mitel Networks Corporation A method of accelerating the training of an acoustic echo canceller in a full-duplex beamforming-based audio conferencing system
USD542543S1 (en) 2005-04-06 2007-05-15 Foremost Group Inc. Mirror
CA2505496A1 (en) 2005-04-27 2006-10-27 Universite De Sherbrooke Robust localization and tracking of simultaneously moving sound sources using beamforming and particle filtering
US7991167B2 (en) 2005-04-29 2011-08-02 Lifesize Communications, Inc. Forming beams with nulls directed at noise sources
JP4886770B2 (ja) 2005-05-05 2012-02-29 株式会社ソニー・コンピュータエンタテインメント コンピュータ対話型処理と共に使用する選択的音源聴音
EP1722545B1 (en) 2005-05-09 2008-08-13 Mitel Networks Corporation A method and a system to reduce training time of an acoustic echo canceller in a full-duplex beamforming-based audio conferencing system
GB2426168B (en) 2005-05-09 2008-08-27 Sony Comp Entertainment Europe Audio processing
JP4654777B2 (ja) 2005-06-03 2011-03-23 パナソニック株式会社 音響エコーキャンセル装置
JP4735956B2 (ja) 2005-06-22 2011-07-27 アイシン・エィ・ダブリュ株式会社 複数ボルト挿入工具
DE602005003342T2 (de) 2005-06-23 2008-09-11 Akg Acoustics Gmbh Methode zur Modellierung eines Mikrofons
US8139782B2 (en) 2005-06-23 2012-03-20 Paul Hughes Modular amplification system
EP1737268B1 (en) 2005-06-23 2012-02-08 AKG Acoustics GmbH Sound field microphone
TWD119718S1 (zh) 2005-06-29 2007-11-01 新力股份有限公司 電視接收機
JP2007019907A (ja) 2005-07-08 2007-01-25 Yamaha Corp 音声伝達システム、および通信会議装置
KR101121231B1 (ko) 2005-07-27 2012-03-23 가부시기가이샤 오디오테크니카 회의용 음성 시스템
JP4225430B2 (ja) 2005-08-11 2009-02-18 旭化成株式会社 音源分離装置、音声認識装置、携帯電話機、音源分離方法、及び、プログラム
US7702116B2 (en) 2005-08-22 2010-04-20 Stone Christopher L Microphone bleed simulator
JP4724505B2 (ja) 2005-09-09 2011-07-13 株式会社日立製作所 超音波探触子およびその製造方法
WO2007034392A2 (en) 2005-09-21 2007-03-29 Koninklijke Philips Electronics N.V. Ultrasound imaging system with voice activated controls using remotely positioned microphone
JP2007089058A (ja) 2005-09-26 2007-04-05 Yamaha Corp マイクアレイ制御装置
US7565949B2 (en) 2005-09-27 2009-07-28 Casio Computer Co., Ltd. Flat panel display module having speaker function
EA011601B1 (ru) 2005-09-30 2009-04-28 Скуэрхэд Текнолоджи Ас Способ и система для направленного захвата аудиосигнала
USD546318S1 (en) 2005-10-07 2007-07-10 Koninklijke Philips Electronics N.V. Subwoofer for home theatre system
DE602006004136D1 (de) 2005-10-12 2009-01-22 Yamaha Corp Lautsprecher- und Mikrofonanordnung
US20070174047A1 (en) 2005-10-18 2007-07-26 Anderson Kyle D Method and apparatus for resynchronizing packetized audio streams
US7970123B2 (en) 2005-10-20 2011-06-28 Mitel Networks Corporation Adaptive coupling equalization in beamforming-based communication systems
USD546814S1 (en) 2005-10-24 2007-07-17 Teac Corporation Guitar amplifier with digital audio disc player
WO2007049556A1 (ja) 2005-10-26 2007-05-03 Matsushita Electric Industrial Co., Ltd. 映像音声出力装置
WO2007052726A1 (ja) 2005-11-02 2007-05-10 Yamaha Corporation 遠隔会議装置
JP4867579B2 (ja) 2005-11-02 2012-02-01 ヤマハ株式会社 遠隔会議装置
US8135143B2 (en) 2005-11-15 2012-03-13 Yamaha Corporation Remote conference apparatus and sound emitting/collecting apparatus
US20070120029A1 (en) 2005-11-29 2007-05-31 Rgb Systems, Inc. A Modular Wall Mounting Apparatus
USD552570S1 (en) 2005-11-30 2007-10-09 Sony Corporation Monitor television receiver
USD547748S1 (en) 2005-12-08 2007-07-31 Sony Corporation Speaker box
US8243951B2 (en) 2005-12-19 2012-08-14 Yamaha Corporation Sound emission and collection device
US8130977B2 (en) 2005-12-27 2012-03-06 Polycom, Inc. Cluster of first-order microphones and method of operation for stereo input of videoconferencing system
JP4929740B2 (ja) 2006-01-31 2012-05-09 ヤマハ株式会社 音声会議装置
US8644477B2 (en) 2006-01-31 2014-02-04 Shure Acquisition Holdings, Inc. Digital Microphone Automixer
USD581510S1 (en) 2006-02-10 2008-11-25 American Power Conversion Corporation Wiring closet ventilation unit
JP2007228070A (ja) 2006-02-21 2007-09-06 Yamaha Corp テレビ会議装置
JP4946090B2 (ja) 2006-02-21 2012-06-06 ヤマハ株式会社 収音放音一体型装置
US8730156B2 (en) 2010-03-05 2014-05-20 Sony Computer Entertainment America Llc Maintaining multiple views on a shared stable virtual space
EP1994788B1 (en) 2006-03-10 2014-05-07 MH Acoustics, LLC Noise-reducing directional microphone array
JP2007274131A (ja) 2006-03-30 2007-10-18 Yamaha Corp 拡声システム及び集音装置
JP2007274463A (ja) 2006-03-31 2007-10-18 Yamaha Corp 遠隔会議装置
US8670581B2 (en) 2006-04-14 2014-03-11 Murray R. Harman Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically
ATE423433T1 (de) 2006-04-18 2009-03-15 Harman Becker Automotive Sys System und verfahren zur mehrkanal- echokompensation
JP2007288679A (ja) 2006-04-19 2007-11-01 Yamaha Corp 放収音装置
JP4816221B2 (ja) 2006-04-21 2011-11-16 ヤマハ株式会社 収音装置および音声会議装置
US20070253561A1 (en) 2006-04-27 2007-11-01 Tsp Systems, Inc. Systems and methods for audio enhancement
US7831035B2 (en) 2006-04-28 2010-11-09 Microsoft Corporation Integration of a microphone array with acoustic echo cancellation and center clipping
US8155331B2 (en) 2006-05-10 2012-04-10 Honda Motor Co., Ltd. Sound source tracking system, method and robot
ATE436151T1 (de) 2006-05-10 2009-07-15 Harman Becker Automotive Sys Kompensation von mehrkanalechos durch dekorrelation
US20070269066A1 (en) 2006-05-19 2007-11-22 Phonak Ag Method for manufacturing an audio signal
WO2006114015A2 (en) 2006-05-19 2006-11-02 Phonak Ag Method for manufacturing an audio signal
JP4747949B2 (ja) 2006-05-25 2011-08-17 ヤマハ株式会社 音声会議装置
US8275120B2 (en) 2006-05-30 2012-09-25 Microsoft Corp. Adaptive acoustic echo cancellation
JP2008005347A (ja) 2006-06-23 2008-01-10 Yamaha Corp 音声通信装置、および複合プラグ
JP2008005293A (ja) 2006-06-23 2008-01-10 Matsushita Electric Ind Co Ltd エコー抑圧装置
USD559553S1 (en) 2006-06-23 2008-01-15 Electric Mirror, L.L.C. Backlit mirror with TV
JP4984683B2 (ja) 2006-06-29 2012-07-25 ヤマハ株式会社 放収音装置
US8184801B1 (en) 2006-06-29 2012-05-22 Nokia Corporation Acoustic echo cancellation for time-varying microphone array beamsteering systems
US20080008339A1 (en) 2006-07-05 2008-01-10 Ryan James G Audio processing system and method
US8189765B2 (en) 2006-07-06 2012-05-29 Panasonic Corporation Multichannel echo canceller
KR100883652B1 (ko) 2006-08-03 2009-02-18 삼성전자주식회사 음성 구간 검출 방법 및 장치, 및 이를 이용한 음성 인식시스템
US8213634B1 (en) 2006-08-07 2012-07-03 Daniel Technology, Inc. Modular and scalable directional audio array with novel filtering
JP4887968B2 (ja) 2006-08-09 2012-02-29 ヤマハ株式会社 音声会議装置
US8280728B2 (en) 2006-08-11 2012-10-02 Broadcom Corporation Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform
US8346546B2 (en) 2006-08-15 2013-01-01 Broadcom Corporation Packet loss concealment based on forced waveform alignment after packet loss
CN101529351A (zh) 2006-08-24 2009-09-09 西门子能量及自动化公司 用于配置可编程逻辑控制器的设备、系统和方法
USD566685S1 (en) 2006-10-04 2008-04-15 Lightspeed Technologies, Inc. Combined wireless receiver, amplifier and speaker
GB0619825D0 (en) 2006-10-06 2006-11-15 Craven Peter G Microphone array
WO2008115284A2 (en) 2006-10-16 2008-09-25 Thx Ltd. Loudspeaker line array configurations and related sound processing
JP5028944B2 (ja) 2006-10-17 2012-09-19 ヤマハ株式会社 音声会議装置及び音声会議システム
US8103030B2 (en) 2006-10-23 2012-01-24 Siemens Audiologische Technik Gmbh Differential directional microphone system and hearing aid device with such a differential directional microphone system
JP4928922B2 (ja) 2006-12-01 2012-05-09 株式会社東芝 情報処理装置、およびプログラム
ATE522078T1 (de) 2006-12-18 2011-09-15 Harman Becker Automotive Sys Echokompensation mit geringer komplexität
JP2008154056A (ja) 2006-12-19 2008-07-03 Yamaha Corp 音声会議装置および音声会議システム
CN101207468B (zh) 2006-12-19 2010-07-21 华为技术有限公司 丢帧隐藏方法、系统和装置
CN101212828A (zh) 2006-12-27 2008-07-02 鸿富锦精密工业（深圳）有限公司 电子设备及其采用的声音模组
KR101365988B1 (ko) 2007-01-05 2014-02-21 삼성전자주식회사 지향성 스피커 시스템의 자동 셋-업 방법 및 장치
US7941677B2 (en) 2007-01-05 2011-05-10 Avaya Inc. Apparatus and methods for managing power distribution over Ethernet
US8599194B2 (en) 2007-01-22 2013-12-03 Textron Innovations Inc. System and method for the interactive display of data in a motion capture environment
KR101297300B1 (ko) 2007-01-31 2013-08-16 삼성전자주식회사 스피커 어레이를 이용한 프론트 서라운드 재생 시스템 및그 신호 재생 방법
US20080188965A1 (en) 2007-02-06 2008-08-07 Rane Corporation Remote audio device network system and method
GB2446619A (en) 2007-02-16 2008-08-20 Audiogravity Holdings Ltd Reduction of wind noise in an omnidirectional microphone array
JP5139111B2 (ja) 2007-03-02 2013-02-06 本田技研工業株式会社 移動音源からの音の抽出方法および装置
US7651390B1 (en) 2007-03-12 2010-01-26 Profeta Jeffery L Ceiling vent air diverter
EP1970894A1 (fr) 2007-03-12 2008-09-17 France Télécom Procédé et dispositif de modification d'un signal audio
USD578509S1 (en) 2007-03-12 2008-10-14 The Professional Monitor Company Limited Audio speaker
US8654955B1 (en) 2007-03-14 2014-02-18 Clearone Communications, Inc. Portable conferencing device with videoconferencing option
US8005238B2 (en) 2007-03-22 2011-08-23 Microsoft Corporation Robust adaptive beamforming with enhanced noise suppression
US8098842B2 (en) 2007-03-29 2012-01-17 Microsoft Corp. Enhanced beamforming for arrays of directional microphones
JP5050616B2 (ja) 2007-04-06 2012-10-17 ヤマハ株式会社 放収音装置
USD587709S1 (en) 2007-04-06 2009-03-03 Sony Corporation Monitor display
US8155304B2 (en) 2007-04-10 2012-04-10 Microsoft Corporation Filter bank optimization for acoustic echo cancellation
JP2008263336A (ja) 2007-04-11 2008-10-30 Oki Electric Ind Co Ltd エコーキャンセラおよびその残留エコー抑制方法
EP1981170A1 (en) 2007-04-13 2008-10-15 Global IP Solutions (GIPS) AB Adaptive, scalable packet loss recovery
DE602007007581D1 (de) 2007-04-17 2010-08-19 Harman Becker Automotive Sys Akustische Lokalisierung eines Sprechers
US20080259731A1 (en) 2007-04-17 2008-10-23 Happonen Aki P Methods and apparatuses for user controlled beamforming
ITTV20070070A1 (it) 2007-04-20 2008-10-21 Swing S R L Dispositivo trasduttore del suono.
US20080279400A1 (en) 2007-05-10 2008-11-13 Reuven Knoll System and method for capturing voice interactions in walk-in environments
JP2008288785A (ja) 2007-05-16 2008-11-27 Yamaha Corp テレビ会議装置
ATE524015T1 (de) 2007-05-22 2011-09-15 Harman Becker Automotive Sys Verfahren und vorrichtung zur verarbeitung mindestens zweier mikrofonsignale zur sendung eines ausgangssignals mit reduzierter interferenz
US8229134B2 (en) 2007-05-24 2012-07-24 University Of Maryland Audio camera using microphone arrays for real time capture of audio images and method for jointly processing the audio images with video images
JP5338040B2 (ja) 2007-06-04 2013-11-13 ヤマハ株式会社 音声会議装置
CN101325631B (zh) 2007-06-14 2010-10-20 华为技术有限公司 一种估计基音周期的方法和装置
CN101833954B (zh) 2007-06-14 2012-07-11 华为终端有限公司 一种实现丢包隐藏的方法和装置
CN101325537B (zh) 2007-06-15 2012-04-04 华为技术有限公司 一种丢帧隐藏的方法和设备
JP2008312002A (ja) 2007-06-15 2008-12-25 Yamaha Corp テレビ会議装置
KR101469739B1 (ko) 2007-06-21 2014-12-05 코닌클리케 필립스 엔.브이. 오디오 신호들을 처리하는 디바이스 및 방법
US20090003586A1 (en) 2007-06-28 2009-01-01 Fortemedia, Inc. Signal processor and method for canceling echo in a communication device
US8285554B2 (en) 2007-07-27 2012-10-09 Dsp Group Limited Method and system for dynamic aliasing suppression
USD589605S1 (en) 2007-08-01 2009-03-31 Trane International Inc. Air inlet grille
JP2009044600A (ja) 2007-08-10 2009-02-26 Panasonic Corp マイクロホン装置およびその製造方法
CN101119323A (zh) 2007-09-21 2008-02-06 腾讯科技（深圳）有限公司 解决网络抖动的方法及装置
US8064629B2 (en) 2007-09-27 2011-11-22 Peigen Jiang Decorative loudspeaker grille
US8095120B1 (en) 2007-09-28 2012-01-10 Avaya Inc. System and method of synchronizing multiple microphone and speaker-equipped devices to create a conferenced area network
US8175871B2 (en) 2007-09-28 2012-05-08 Qualcomm Incorporated Apparatus and method of noise and echo reduction in multiple microphone audio systems
KR101292206B1 (ko) 2007-10-01 2013-08-01 삼성전자주식회사 어레이 스피커 시스템 및 그 구현 방법
KR101434200B1 (ko) 2007-10-01 2014-08-26 삼성전자주식회사 혼합 사운드로부터의 음원 판별 방법 및 장치
JP5012387B2 (ja) 2007-10-05 2012-08-29 ヤマハ株式会社 音声処理システム
US7832080B2 (en) 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
US8428661B2 (en) 2007-10-30 2013-04-23 Broadcom Corporation Speech intelligibility in telephones with multiple microphones
US8199927B1 (en) 2007-10-31 2012-06-12 ClearOnce Communications, Inc. Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
US8290142B1 (en) 2007-11-12 2012-10-16 Clearone Communications, Inc. Echo cancellation in a portable conferencing device with externally-produced audio
WO2009062213A1 (en) 2007-11-13 2009-05-22 Akg Acoustics Gmbh Microphone arrangement, having two pressure gradient transducers
KR101415026B1 (ko) 2007-11-19 2014-07-04 삼성전자주식회사 마이크로폰 어레이를 이용한 다채널 사운드 획득 방법 및장치
ATE554481T1 (de) 2007-11-21 2012-05-15 Nuance Communications Inc Sprecherlokalisierung
KR101449433B1 (ko) 2007-11-30 2014-10-13 삼성전자주식회사 마이크로폰을 통해 입력된 사운드 신호로부터 잡음을제거하는 방법 및 장치
JP5097523B2 (ja) 2007-12-07 2012-12-12 船井電機株式会社 音声入力装置
US8433061B2 (en) 2007-12-10 2013-04-30 Microsoft Corporation Reducing echo
US8744069B2 (en) 2007-12-10 2014-06-03 Microsoft Corporation Removing near-end frequencies from far-end sound
US8219387B2 (en) 2007-12-10 2012-07-10 Microsoft Corporation Identifying far-end sound
US8175291B2 (en) 2007-12-19 2012-05-08 Qualcomm Incorporated Systems, methods, and apparatus for multi-microphone based speech enhancement
US20090173570A1 (en) 2007-12-20 2009-07-09 Levit Natalia V Acoustically absorbent ceiling tile having barrier facing with diffuse reflectance
USD604729S1 (en) 2008-01-04 2009-11-24 Apple Inc. Electronic device
US7765762B2 (en) 2008-01-08 2010-08-03 Usg Interiors, Inc. Ceiling panel
USD582391S1 (en) 2008-01-17 2008-12-09 Roland Corporation Speaker
USD595402S1 (en) 2008-02-04 2009-06-30 Panasonic Corporation Ventilating fan for a ceiling
WO2009105793A1 (en) 2008-02-26 2009-09-03 Akg Acoustics Gmbh Transducer assembly
JP5003531B2 (ja) 2008-02-27 2012-08-15 ヤマハ株式会社 音声会議システム
US8503653B2 (en) 2008-03-03 2013-08-06 Alcatel Lucent Method and apparatus for active speaker selection using microphone arrays and speaker recognition
KR20100131467A (ko) 2008-03-03 2010-12-15 노키아 코포레이션 복수의 오디오 채널들을 캡쳐하고 렌더링하는 장치
WO2009109069A1 (en) 2008-03-07 2009-09-11 Arcsoft (Shanghai) Technology Company, Ltd. Implementing a high quality voip device
US8626080B2 (en) 2008-03-11 2014-01-07 Intel Corporation Bidirectional iterative beam forming
US8559611B2 (en) 2008-04-07 2013-10-15 Polycom, Inc. Audio signal routing
US8379823B2 (en) 2008-04-07 2013-02-19 Polycom, Inc. Distributed bridging
US8582783B2 (en) 2008-04-07 2013-11-12 Dolby Laboratories Licensing Corporation Surround sound generation from a microphone array
US9142221B2 (en) 2008-04-07 2015-09-22 Cambridge Silicon Radio Limited Noise reduction
US8284949B2 (en) 2008-04-17 2012-10-09 University Of Utah Research Foundation Multi-channel acoustic echo cancellation system and method
US8385557B2 (en) 2008-06-19 2013-02-26 Microsoft Corporation Multichannel acoustic echo reduction
US8109360B2 (en) 2008-06-27 2012-02-07 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
US8672087B2 (en) 2008-06-27 2014-03-18 Rgb Systems, Inc. Ceiling loudspeaker support system
US8276706B2 (en) 2008-06-27 2012-10-02 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
US7861825B2 (en) 2008-06-27 2011-01-04 Rgb Systems, Inc. Method and apparatus for a loudspeaker assembly
US8631897B2 (en) 2008-06-27 2014-01-21 Rgb Systems, Inc. Ceiling loudspeaker system
US8286749B2 (en) 2008-06-27 2012-10-16 Rgb Systems, Inc. Ceiling loudspeaker system
JP4991649B2 (ja) 2008-07-02 2012-08-01 パナソニック株式会社 音声信号処理装置
KR100901464B1 (ko) 2008-07-03 2009-06-08 (주)기가바이트씨앤씨 집음기 및 집음기 세트
EP2146519B1 (en) 2008-07-16 2012-06-06 Nuance Communications, Inc. Beamforming pre-processing for speaker localization
US20100011644A1 (en) 2008-07-17 2010-01-21 Kramer Eric J Memorabilia display system
JP5075042B2 (ja) 2008-07-23 2012-11-14 日本電信電話株式会社 エコー消去装置、エコー消去方法、そのプログラム、記録媒体
USD613338S1 (en) 2008-07-31 2010-04-06 Chris Marukos Interchangeable advertising sign
USD595736S1 (en) 2008-08-15 2009-07-07 Samsung Electronics Co., Ltd. DVD player
AU2009287421B2 (en) 2008-08-29 2015-09-17 Biamp Systems, LLC A microphone array system and method for sound acquisition
US8605890B2 (en) 2008-09-22 2013-12-10 Microsoft Corporation Multichannel acoustic echo cancellation
EP2350683B1 (en) 2008-10-06 2017-01-04 Raytheon BBN Technologies Corp. Wearable shooter localization system
WO2010043998A1 (en) 2008-10-16 2010-04-22 Nxp B.V. Microphone system and method of operating the same
US8724829B2 (en) 2008-10-24 2014-05-13 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for coherence detection
US8041054B2 (en) 2008-10-31 2011-10-18 Continental Automotive Systems, Inc. Systems and methods for selectively switching between multiple microphones
JP5386936B2 (ja) 2008-11-05 2014-01-15 ヤマハ株式会社 放収音装置
US20100123785A1 (en) 2008-11-17 2010-05-20 Apple Inc. Graphic Control for Directional Audio Input
US8150063B2 (en) 2008-11-25 2012-04-03 Apple Inc. Stabilizing directional audio input from a moving microphone array
KR20100060457A (ko) 2008-11-27 2010-06-07 삼성전자주식회사 이동통신 단말기의 동작모드 제어장치 및 방법
US8744101B1 (en) 2008-12-05 2014-06-03 Starkey Laboratories, Inc. System for controlling the primary lobe of a hearing instrument's directional sensitivity pattern
EP2197219B1 (en) 2008-12-12 2012-10-24 Nuance Communications, Inc. Method for determining a time delay for time delay compensation
US8842851B2 (en) 2008-12-12 2014-09-23 Broadcom Corporation Audio source localization system and method
NO332961B1 (no) 2008-12-23 2013-02-11 Cisco Systems Int Sarl Forhoyet toroidmikrofonapparat
US8259959B2 (en) 2008-12-23 2012-09-04 Cisco Technology, Inc. Toroid microphone apparatus
JP5446275B2 (ja) 2009-01-08 2014-03-19 ヤマハ株式会社 拡声システム
NO333056B1 (no) 2009-01-21 2013-02-25 Cisco Systems Int Sarl Direktiv mikrofon
US8116499B2 (en) 2009-01-23 2012-02-14 John Grant Microphone adaptor for altering the geometry of a microphone without altering its frequency response characteristics
EP2211564B1 (en) 2009-01-23 2014-09-10 Harman Becker Automotive Systems GmbH Passenger compartment communication system
DE102009007891A1 (de) 2009-02-07 2010-08-12 Willsingh Wilson Resonanz-Schallabsorber in mehrschichtiger Ausführung
WO2010092568A1 (en) 2009-02-09 2010-08-19 Waves Audio Ltd. Multiple microphone based directional sound filter
JP5304293B2 (ja) 2009-02-10 2013-10-02 ヤマハ株式会社 収音装置
DE102009010278B4 (de) 2009-02-16 2018-12-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprecher
EP2222091B1 (en) 2009-02-23 2013-04-24 Nuance Communications, Inc. Method for determining a set of filter coefficients for an acoustic echo compensation means
US20100217590A1 (en) 2009-02-24 2010-08-26 Broadcom Corporation Speaker localization system and method
CN101510426B (zh) 2009-03-23 2013-03-27 北京中星微电子有限公司 一种噪声消除方法及系统
US8184180B2 (en) 2009-03-25 2012-05-22 Broadcom Corporation Spatially synchronized audio and video capture
CN101854573B (zh) 2009-03-30 2014-12-24 富准精密工业(深圳)有限公司 音响结构及使用该音响结构的电子装置
GB0906269D0 (en) 2009-04-09 2009-05-20 Ntnu Technology Transfer As Optimal modal beamformer for sensor arrays
US8291670B2 (en) 2009-04-29 2012-10-23 E.M.E.H., Inc. Modular entrance floor system
US8483398B2 (en) 2009-04-30 2013-07-09 Hewlett-Packard Development Company, L.P. Methods and systems for reducing acoustic echoes in multichannel communication systems by reducing the dimensionality of the space of impulse responses
WO2010129717A1 (en) 2009-05-05 2010-11-11 Abl Ip Holding, Llc Low profile oled luminaire for grid ceilings
BRPI0924076B1 (pt) 2009-05-12 2021-09-21 Huawei Device (Shenzhen) Co., Ltd. Sistema de telepresença e método de telepresença
JP5169986B2 (ja) 2009-05-13 2013-03-27 沖電気工業株式会社 電話装置、エコーキャンセラ及びエコーキャンセルプログラム
JP5246044B2 (ja) 2009-05-29 2013-07-24 ヤマハ株式会社 音響装置
CN102461205B (zh) 2009-06-02 2014-12-24 皇家飞利浦电子股份有限公司 多通道声学回声消除器装置和多通道声学回声消除的方法
US9140054B2 (en) 2009-06-05 2015-09-22 Oberbroeckling Development Company Insert holding system
US20100314513A1 (en) 2009-06-12 2010-12-16 Rgb Systems, Inc. Method and apparatus for overhead equipment mounting
US8204198B2 (en) 2009-06-19 2012-06-19 Magor Communications Corporation Method and apparatus for selecting an audio stream
JP2011015018A (ja) 2009-06-30 2011-01-20 Clarion Co Ltd 自動音量制御装置
JP4416836B1 (ja) 2009-07-14 2010-02-17 株式会社ビジョナリスト 画像データ表示システム及び画像データ表示プログラム
JP5347794B2 (ja) 2009-07-21 2013-11-20 ヤマハ株式会社 エコー抑圧方法およびその装置
FR2948484B1 (fr) 2009-07-23 2011-07-29 Parrot Procede de filtrage des bruits lateraux non-stationnaires pour un dispositif audio multi-microphone, notamment un dispositif telephonique "mains libres" pour vehicule automobile
USD614871S1 (en) 2009-08-07 2010-05-04 Hon Hai Precision Industry Co., Ltd. Digital photo frame
US8233352B2 (en) 2009-08-17 2012-07-31 Broadcom Corporation Audio source localization system and method
GB2473267A (en) 2009-09-07 2011-03-09 Nokia Corp Processing audio signals to reduce noise
JP5452158B2 (ja) 2009-10-07 2014-03-26 株式会社日立製作所 音響監視システム、及び音声集音システム
GB201011530D0 (en) 2010-07-08 2010-08-25 Berry Michael T Encasements comprising phase change materials
JP5347902B2 (ja) 2009-10-22 2013-11-20 ヤマハ株式会社 音響処理装置
US20110096915A1 (en) 2009-10-23 2011-04-28 Broadcom Corporation Audio spatialization for conference calls with multiple and moving talkers
USD643015S1 (en) 2009-11-05 2011-08-09 Lg Electronics Inc. Speaker for home theater
EP2499839B1 (en) 2009-11-12 2017-01-04 Robert Henry Frater Speakerphone with microphone array
US8515109B2 (en) 2009-11-19 2013-08-20 Gn Resound A/S Hearing aid with beamforming capability
USD617441S1 (en) 2009-11-30 2010-06-08 Panasonic Corporation Ceiling ventilating fan
CH702399B1 (fr) 2009-12-02 2018-05-15 Veovox Sa Appareil et procédé pour la saisie et le traitement de la voix.
US9147385B2 (en) 2009-12-15 2015-09-29 Smule, Inc. Continuous score-coded pitch correction
EP2517481A4 (en) 2009-12-22 2015-06-03 Mh Acoustics Llc SURFACE MOUNTED MICROPHONE ARRAYS ON FLEXIBLE PRINTED CIRCUIT BOARDS
US8634569B2 (en) 2010-01-08 2014-01-21 Conexant Systems, Inc. Systems and methods for echo cancellation and echo suppression
EP2360940A1 (en) 2010-01-19 2011-08-24 Televic NV. Steerable microphone array system with a first order directional pattern
USD658153S1 (en) 2010-01-25 2012-04-24 Lg Electronics Inc. Home theater receiver
US8583481B2 (en) 2010-02-12 2013-11-12 Walter Viveiros Portable interactive modular selling room
EP2537353B1 (en) 2010-02-19 2018-03-07 Sivantos Pte. Ltd. Device and method for direction dependent spatial noise reduction
JP5550406B2 (ja) 2010-03-23 2014-07-16 株式会社オーディオテクニカ 可変指向性マイクロホン
USD642385S1 (en) 2010-03-31 2011-08-02 Samsung Electronics Co., Ltd. Electronic frame
CN101860776B (zh) 2010-05-07 2013-08-21 中国科学院声学研究所 一种平面螺旋形传声器阵列
US8395653B2 (en) 2010-05-18 2013-03-12 Polycom, Inc. Videoconferencing endpoint having multiple voice-tracking cameras
US8515089B2 (en) 2010-06-04 2013-08-20 Apple Inc. Active noise cancellation decisions in a portable audio device
USD636188S1 (en) 2010-06-17 2011-04-19 Samsung Electronics Co., Ltd. Electronic frame
USD655271S1 (en) 2010-06-17 2012-03-06 Lg Electronics Inc. Home theater receiver
US9094496B2 (en) 2010-06-18 2015-07-28 Avaya Inc. System and method for stereophonic acoustic echo cancellation
US8638951B2 (en) 2010-07-15 2014-01-28 Motorola Mobility Llc Electronic apparatus for generating modified wideband audio signals based on two or more wideband microphone signals
US8755174B2 (en) 2010-07-16 2014-06-17 Ensco, Inc. Media appliance and method for use of same
US9769519B2 (en) 2010-07-16 2017-09-19 Enseo, Inc. Media appliance and method for use of same
US8965546B2 (en) 2010-07-26 2015-02-24 Qualcomm Incorporated Systems, methods, and apparatus for enhanced acoustic imaging
US9172345B2 (en) 2010-07-27 2015-10-27 Bitwave Pte Ltd Personalized adjustment of an audio device
CN101894558A (zh) 2010-08-04 2010-11-24 华为技术有限公司 丢帧恢复方法、设备以及语音增强方法、设备和系统
BR112012031656A2 (pt) 2010-08-25 2016-11-08 Asahi Chemical Ind dispositivo, e método de separação de fontes sonoras, e, programa
KR101750338B1 (ko) 2010-09-13 2017-06-23 삼성전자주식회사 마이크의 빔포밍 수행 방법 및 장치
KR101782050B1 (ko) 2010-09-17 2017-09-28 삼성전자주식회사 비등간격으로 배치된 마이크로폰을 이용한 음질 향상 장치 및 방법
US8861756B2 (en) 2010-09-24 2014-10-14 LI Creative Technologies, Inc. Microphone array system
WO2012046256A2 (en) 2010-10-08 2012-04-12 Optical Fusion Inc. Audio acoustic echo cancellation for video conferencing
US8553904B2 (en) 2010-10-14 2013-10-08 Hewlett-Packard Development Company, L.P. Systems and methods for performing sound source localization
US8976977B2 (en) 2010-10-15 2015-03-10 King's College London Microphone array
US9031256B2 (en) 2010-10-25 2015-05-12 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for orientation-sensitive recording control
US9552840B2 (en) 2010-10-25 2017-01-24 Qualcomm Incorporated Three-dimensional sound capturing and reproducing with multi-microphones
EP2448289A1 (en) 2010-10-28 2012-05-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for deriving a directional information and computer program product
KR101715779B1 (ko) 2010-11-09 2017-03-13 삼성전자주식회사 음원 신호 처리 장치 및 그 방법
EP2638694A4 (en) 2010-11-12 2017-05-03 Nokia Technologies Oy An Audio Processing Apparatus
US9578440B2 (en) 2010-11-15 2017-02-21 The Regents Of The University Of California Method for controlling a speaker array to provide spatialized, localized, and binaural virtual surround sound
US8761412B2 (en) 2010-12-16 2014-06-24 Sony Computer Entertainment Inc. Microphone array steering with image-based source location
CN103329566A (zh) 2010-12-20 2013-09-25 峰力公司 用于房间中的语音增强的方法和系统
US9084038B2 (en) 2010-12-22 2015-07-14 Sony Corporation Method of controlling audio recording and electronic device
KR101761312B1 (ko) 2010-12-23 2017-07-25 삼성전자주식회사 마이크 어레이를 이용한 방향성 음원 필터링 장치 및 그 제어방법
KR101852569B1 (ko) 2011-01-04 2018-06-12 삼성전자주식회사 은닉 마이크로폰 배치 구조를 가진 마이크로폰 어레이 장치 및 그 마이크로폰 어레이 장치를 포함한 음향 신호 처리 장치
US8525868B2 (en) 2011-01-13 2013-09-03 Qualcomm Incorporated Variable beamforming with a mobile platform
JP5395822B2 (ja) 2011-02-07 2014-01-22 日本電信電話株式会社 ズームマイク装置
US9100735B1 (en) 2011-02-10 2015-08-04 Dolby Laboratories Licensing Corporation Vector noise cancellation
US20120207335A1 (en) 2011-02-14 2012-08-16 Nxp B.V. Ported mems microphone
US20120224709A1 (en) 2011-03-03 2012-09-06 David Clark Company Incorporated Voice activation system and method and communication system and method using the same
US9354310B2 (en) 2011-03-03 2016-05-31 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for source localization using audible sound and ultrasound
US8929564B2 (en) 2011-03-03 2015-01-06 Microsoft Corporation Noise adaptive beamforming for microphone arrays
WO2012122132A1 (en) 2011-03-04 2012-09-13 University Of Washington Dynamic distribution of acoustic energy in a projected sound field and associated systems and methods
US8942382B2 (en) 2011-03-22 2015-01-27 Mh Acoustics Llc Dynamic beamformer processing for acoustic echo cancellation in systems with high acoustic coupling
US8676728B1 (en) 2011-03-30 2014-03-18 Rawles Llc Sound localization with artificial neural network
US8620650B2 (en) 2011-04-01 2013-12-31 Bose Corporation Rejecting noise with paired microphones
US8811601B2 (en) 2011-04-04 2014-08-19 Qualcomm Incorporated Integrated echo cancellation and noise suppression
GB2494849A (en) 2011-04-14 2013-03-27 Orbitsound Ltd Microphone assembly
US20120262536A1 (en) 2011-04-14 2012-10-18 Microsoft Corporation Stereophonic teleconferencing using a microphone array
EP2710788A1 (en) 2011-05-17 2014-03-26 Google, Inc. Using echo cancellation information to limit gain control adaptation
EP2716069B1 (en) 2011-05-23 2021-09-08 Sonova AG A method of processing a signal in a hearing instrument, and hearing instrument
USD682266S1 (en) 2011-05-23 2013-05-14 Arcadyan Technology Corporation WLAN ADSL device
WO2012160459A1 (en) 2011-05-24 2012-11-29 Koninklijke Philips Electronics N.V. Privacy sound system
US9215327B2 (en) 2011-06-11 2015-12-15 Clearone Communications, Inc. Methods and apparatuses for multi-channel acoustic echo cancelation
US9226088B2 (en) 2011-06-11 2015-12-29 Clearone Communications, Inc. Methods and apparatuses for multiple configurations of beamforming microphone arrays
USD656473S1 (en) 2011-06-11 2012-03-27 Amx Llc Wall display
CA2838856A1 (en) 2011-06-14 2012-12-20 Rgb Systems, Inc. Ceiling loudspeaker system
CN102833664A (zh) 2011-06-15 2012-12-19 Rgb系统公司 天花板扩音器系统
US9973848B2 (en) 2011-06-21 2018-05-15 Amazon Technologies, Inc. Signal-enhancing beamforming in an augmented reality environment
JP5799619B2 (ja) 2011-06-24 2015-10-28 船井電機株式会社 マイクロホンユニット
DE102011051727A1 (de) 2011-07-11 2013-01-17 Pinta Acoustic Gmbh Verfahren und Vorrichtung zur aktiven Schallmaskierung
US9066055B2 (en) 2011-07-27 2015-06-23 Texas Instruments Incorporated Power supply architectures for televisions and other powered devices
JP5289517B2 (ja) 2011-07-28 2013-09-11 株式会社半導体理工学研究センター センサネットワークシステムとその通信方法
EP2552128A1 (en) 2011-07-29 2013-01-30 Sonion Nederland B.V. A dual cartridge directional microphone
CN102915737B (zh) 2011-07-31 2018-01-19 中兴通讯股份有限公司 一种浊音起始帧后丢帧的补偿方法和装置
US9253567B2 (en) 2011-08-31 2016-02-02 Stmicroelectronics S.R.L. Array microphone apparatus for generating a beam forming signal and beam forming method thereof
US10015589B1 (en) 2011-09-02 2018-07-03 Cirrus Logic, Inc. Controlling speech enhancement algorithms using near-field spatial statistics
USD678329S1 (en) 2011-09-21 2013-03-19 Samsung Electronics Co., Ltd. Portable multimedia terminal
USD686182S1 (en) 2011-09-26 2013-07-16 Nakayo Telecommunications, Inc. Audio equipment for audio teleconferences
KR101751749B1 (ko) 2011-09-27 2017-07-03 한국전자통신연구원 이차원 지향성 스피커 어레이 모듈
GB2495130B (en) 2011-09-30 2018-10-24 Skype Processing audio signals
JP5685173B2 (ja) 2011-10-04 2015-03-18 Toa株式会社 拡声システム
JP5668664B2 (ja) 2011-10-12 2015-02-12 船井電機株式会社 マイクロホン装置、マイクロホン装置を備えた電子機器、マイクロホン装置の製造方法、マイクロホン装置用基板およびマイクロホン装置用基板の製造方法
US9143879B2 (en) 2011-10-19 2015-09-22 James Keith McElveen Directional audio array apparatus and system
EP3537436B1 (en) 2011-10-24 2023-12-20 ZTE Corporation Frame loss compensation method and apparatus for voice frame signal
USD693328S1 (en) 2011-11-09 2013-11-12 Sony Corporation Speaker box
GB201120392D0 (en) 2011-11-25 2012-01-11 Skype Ltd Processing signals
US8983089B1 (en) 2011-11-28 2015-03-17 Rawles Llc Sound source localization using multiple microphone arrays
KR101282673B1 (ko) 2011-12-09 2013-07-05 현대자동차주식회사 음원 위치 추정 방법
US9408011B2 (en) 2011-12-19 2016-08-02 Qualcomm Incorporated Automated user/sensor location recognition to customize audio performance in a distributed multi-sensor environment
USD687432S1 (en) 2011-12-28 2013-08-06 Hon Hai Precision Industry Co., Ltd. Tablet personal computer
US9197974B1 (en) 2012-01-06 2015-11-24 Audience, Inc. Directional audio capture adaptation based on alternative sensory input
US8511429B1 (en) 2012-02-13 2013-08-20 Usg Interiors, Llc Ceiling panels made from corrugated cardboard
JP3175622U (ja) 2012-02-23 2012-05-24 株式会社ラクテル 和紙ラベル
USD699712S1 (en) 2012-02-29 2014-02-18 Clearone Communications, Inc. Beamforming microphone
JP5741487B2 (ja) 2012-02-29 2015-07-01 オムロン株式会社 マイクロフォン
EP2832111B1 (en) 2012-03-26 2018-05-23 University of Surrey Acoustic source separation
CN102646418B (zh) 2012-03-29 2014-07-23 北京华夏电通科技股份有限公司 一种远程音频交互的多路声学回音消除方法及系统
EP2845189B1 (en) 2012-04-30 2018-09-05 Creative Technology Ltd. A universal reconfigurable echo cancellation system
US9336792B2 (en) 2012-05-07 2016-05-10 Marvell World Trade Ltd. Systems and methods for voice enhancement in audio conference
US9423870B2 (en) 2012-05-08 2016-08-23 Google Inc. Input determination method
US20130304476A1 (en) 2012-05-11 2013-11-14 Qualcomm Incorporated Audio User Interaction Recognition and Context Refinement
US20130329908A1 (en) 2012-06-08 2013-12-12 Apple Inc. Adjusting audio beamforming settings based on system state
US20130332156A1 (en) 2012-06-11 2013-12-12 Apple Inc. Sensor Fusion to Improve Speech/Audio Processing in a Mobile Device
US20130343549A1 (en) 2012-06-22 2013-12-26 Verisilicon Holdings Co., Ltd. Microphone arrays for generating stereo and surround channels, method of operation thereof and module incorporating the same
US9560446B1 (en) 2012-06-27 2017-01-31 Amazon Technologies, Inc. Sound source locator with distributed microphone array
US20140003635A1 (en) 2012-07-02 2014-01-02 Qualcomm Incorporated Audio signal processing device calibration
US9065901B2 (en) 2012-07-03 2015-06-23 Harris Corporation Electronic communication devices with integrated microphones
US20140016794A1 (en) 2012-07-13 2014-01-16 Conexant Systems, Inc. Echo cancellation system and method with multiple microphones and multiple speakers
SG11201407474VA (en) 2012-07-13 2014-12-30 Razer Asia Pacific Pte Ltd An audio signal output device and method of processing an audio signal
US9258644B2 (en) 2012-07-27 2016-02-09 Nokia Technologies Oy Method and apparatus for microphone beamforming
IN2015DN00484A (zh) 2012-07-27 2015-06-26 Sony Corp
US9094768B2 (en) 2012-08-02 2015-07-28 Crestron Electronics Inc. Loudspeaker calibration using multiple wireless microphones
CN102821336B (zh) 2012-08-08 2015-01-21 英爵音响（上海）有限公司 吸顶式平板音响
US9113243B2 (en) 2012-08-16 2015-08-18 Cisco Technology, Inc. Method and system for obtaining an audio signal
USD725059S1 (en) 2012-08-29 2015-03-24 Samsung Electronics Co., Ltd. Television receiver
US9031262B2 (en) 2012-09-04 2015-05-12 Avid Technology, Inc. Distributed, self-scaling, network-based architecture for sound reinforcement, mixing, and monitoring
US9088336B2 (en) 2012-09-06 2015-07-21 Imagination Technologies Limited Systems and methods of echo and noise cancellation in voice communication
US8873789B2 (en) 2012-09-06 2014-10-28 Audix Corporation Articulating microphone mount
EP2893713B1 (en) 2012-09-10 2020-08-12 Robert Bosch GmbH Mems microphone package with molded interconnect device
WO2014037765A1 (en) 2012-09-10 2014-03-13 Nokia Corporation Detection of a microphone impairment and automatic microphone switching
US8987842B2 (en) 2012-09-14 2015-03-24 Solid State System Co., Ltd. Microelectromechanical system (MEMS) device and fabrication method thereof
USD685346S1 (en) 2012-09-14 2013-07-02 Research In Motion Limited Speaker
US9549253B2 (en) 2012-09-26 2017-01-17 Foundation for Research and Technology—Hellas (FORTH) Institute of Computer Science (ICS) Sound source localization and isolation apparatuses, methods and systems
EP2759147A1 (en) 2012-10-02 2014-07-30 MH Acoustics, LLC Earphones having configurable microphone arrays
US9264799B2 (en) 2012-10-04 2016-02-16 Siemens Aktiengesellschaft Method and apparatus for acoustic area monitoring by exploiting ultra large scale arrays of microphones
US9615172B2 (en) 2012-10-04 2017-04-04 Siemens Aktiengesellschaft Broadband sensor location selection using convex optimization in very large scale arrays
US20140098233A1 (en) 2012-10-05 2014-04-10 Sensormatic Electronics, LLC Access Control Reader with Audio Spatial Filtering
US9232310B2 (en) 2012-10-15 2016-01-05 Nokia Technologies Oy Methods, apparatuses and computer program products for facilitating directional audio capture with multiple microphones
PL401372A1 (pl) 2012-10-26 2014-04-28 Ivona Software Spółka Z Ograniczoną Odpowiedzialnością Hybrydowa kompresja danych głosowych w systemach zamiany tekstu na mowę
US9247367B2 (en) 2012-10-31 2016-01-26 International Business Machines Corporation Management system with acoustical measurement for monitoring noise levels
US9232185B2 (en) 2012-11-20 2016-01-05 Clearone Communications, Inc. Audio conferencing system for all-in-one displays
WO2014085978A1 (en) 2012-12-04 2014-06-12 Northwestern Polytechnical University Low noise differential microphone arrays
CN103888630A (zh) 2012-12-20 2014-06-25 杜比实验室特许公司 用于控制声学回声消除的方法和音频处理装置
JP2014143678A (ja) 2012-12-27 2014-08-07 Panasonic Corp 音声処理システム及び音声処理方法
JP6074263B2 (ja) 2012-12-27 2017-02-01 キヤノン株式会社 雑音抑圧装置及びその制御方法
CN103903627B (zh) 2012-12-27 2018-06-19 中兴通讯股份有限公司 一种语音数据的传输方法及装置
USD735717S1 (en) 2012-12-29 2015-08-04 Intel Corporation Electronic display device
TWI593294B (zh) 2013-02-07 2017-07-21 晨星半導體股份有限公司 收音系統與相關方法
JP6253031B2 (ja) 2013-02-15 2017-12-27 パナソニックＩｐマネジメント株式会社 キャリブレーション方法
US9167326B2 (en) 2013-02-21 2015-10-20 Core Brands, Llc In-wall multiple-bay loudspeaker system
TWM457212U (zh) 2013-02-21 2013-07-11 Chi Mei Comm Systems Inc 殼體組件
US9294839B2 (en) 2013-03-01 2016-03-22 Clearone, Inc. Augmentation of a beamforming microphone array with non-beamforming microphones
KR101892643B1 (ko) 2013-03-05 2018-08-29 애플 인크. 하나 이상의 청취자들의 위치에 기초한 스피커 어레이의 빔 패턴의 조정
CN104053088A (zh) 2013-03-11 2014-09-17 联想(北京)有限公司 一种麦克风阵列调整方法、麦克风阵列及电子设备
US9319799B2 (en) 2013-03-14 2016-04-19 Robert Bosch Gmbh Microphone package with integrated substrate
US9877580B2 (en) 2013-03-14 2018-01-30 Rgb Systems, Inc. Suspended ceiling-mountable enclosure
US9516428B2 (en) 2013-03-14 2016-12-06 Infineon Technologies Ag MEMS acoustic transducer, MEMS microphone, MEMS microspeaker, array of speakers and method for manufacturing an acoustic transducer
US20140357177A1 (en) 2013-03-14 2014-12-04 Rgb Systems, Inc. Suspended ceiling-mountable enclosure
US20170206064A1 (en) 2013-03-15 2017-07-20 JIBO, Inc. Persistent companion device configuration and deployment platform
US9661418B2 (en) 2013-03-15 2017-05-23 Loud Technologies Inc Method and system for large scale audio system
US8861713B2 (en) 2013-03-17 2014-10-14 Texas Instruments Incorporated Clipping based on cepstral distance for acoustic echo canceller
US9788119B2 (en) 2013-03-20 2017-10-10 Nokia Technologies Oy Spatial audio apparatus
CN104065798B (zh) 2013-03-21 2016-08-03 华为技术有限公司 声音信号处理方法及设备
EP2981097B1 (en) 2013-03-29 2017-06-07 Nissan Motor Co., Ltd Microphone support device for sound source localization
TWI486002B (zh) 2013-03-29 2015-05-21 Hon Hai Prec Ind Co Ltd 可消除干擾的電子裝置
US9491561B2 (en) 2013-04-11 2016-11-08 Broadcom Corporation Acoustic echo cancellation with internal upmixing
US9038301B2 (en) 2013-04-15 2015-05-26 Rose Displays Ltd. Illuminable panel frame assembly arrangement
WO2014177855A1 (en) 2013-04-29 2014-11-06 University Of Surrey Microphone array for acoustic source separation
US9936290B2 (en) 2013-05-03 2018-04-03 Qualcomm Incorporated Multi-channel echo cancellation and noise suppression
US20160155455A1 (en) 2013-05-22 2016-06-02 Nokia Technologies Oy A shared audio scene apparatus
EP3001417A4 (en) 2013-05-23 2017-05-03 NEC Corporation Sound processing system, sound processing method, sound processing program, vehicle equipped with sound processing system, and microphone installation method
GB201309781D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo cancellation
US9357080B2 (en) 2013-06-04 2016-05-31 Broadcom Corporation Spatial quiescence protection for multi-channel acoustic echo cancellation
US20140363008A1 (en) 2013-06-05 2014-12-11 DSP Group Use of vibration sensor in acoustic echo cancellation
WO2014199446A1 (ja) 2013-06-11 2014-12-18 Toa株式会社 マイクロホン装置
EP3011758B1 (en) 2013-06-18 2020-09-30 Creative Technology Ltd. Headset with end-firing microphone array and automatic calibration of end-firing array
USD717272S1 (en) 2013-06-24 2014-11-11 Lg Electronics Inc. Speaker
USD743376S1 (en) 2013-06-25 2015-11-17 Lg Electronics Inc. Speaker
EP2819430A1 (en) 2013-06-27 2014-12-31 Speech Processing Solutions GmbH Handheld mobile recording device with microphone characteristic selection means
DE102013213717A1 (de) 2013-07-12 2015-01-15 Robert Bosch Gmbh MEMS-Bauelement mit einer Mikrofonstruktur und Verfahren zu dessen Herstellung
US9426598B2 (en) 2013-07-15 2016-08-23 Dts, Inc. Spatial calibration of surround sound systems including listener position estimation
US9257132B2 (en) 2013-07-16 2016-02-09 Texas Instruments Incorporated Dominant speech extraction in the presence of diffused and directional noise sources
USD756502S1 (en) 2013-07-23 2016-05-17 Applied Materials, Inc. Gas diffuser assembly
JP2015027124A (ja) 2013-07-24 2015-02-05 船井電機株式会社 給電システム、電子機器、ケーブル、プログラム
US9445196B2 (en) 2013-07-24 2016-09-13 Mh Acoustics Llc Inter-channel coherence reduction for stereophonic and multichannel acoustic echo cancellation
USD725631S1 (en) 2013-07-31 2015-03-31 Sol Republic Inc. Speaker
CN104347076B (zh) 2013-08-09 2017-07-14 中国电信股份有限公司 网络音频丢包掩蔽方法和装置
US9319532B2 (en) 2013-08-15 2016-04-19 Cisco Technology, Inc. Acoustic echo cancellation for audio system with bring your own devices (BYOD)
US9203494B2 (en) 2013-08-20 2015-12-01 Broadcom Corporation Communication device with beamforming and methods for use therewith
USD726144S1 (en) 2013-08-23 2015-04-07 Panasonic Intellectual Property Management Co., Ltd. Wireless speaker
GB2517690B (en) 2013-08-26 2017-02-08 Canon Kk Method and device for localizing sound sources placed within a sound environment comprising ambient noise
USD729767S1 (en) 2013-09-04 2015-05-19 Samsung Electronics Co., Ltd. Speaker
US9549079B2 (en) 2013-09-05 2017-01-17 Cisco Technology, Inc. Acoustic echo cancellation for microphone array with dynamically changing beam forming
US20150070188A1 (en) 2013-09-09 2015-03-12 Soil IQ, Inc. Monitoring device and method of use
US9763004B2 (en) 2013-09-17 2017-09-12 Alcatel Lucent Systems and methods for audio conferencing
CN104464739B (zh) 2013-09-18 2017-08-11 华为技术有限公司 音频信号处理方法及装置、差分波束形成方法及装置
US9591404B1 (en) 2013-09-27 2017-03-07 Amazon Technologies, Inc. Beamformer design using constrained convex optimization in three-dimensional space
US20150097719A1 (en) 2013-10-03 2015-04-09 Sulon Technologies Inc. System and method for active reference positioning in an augmented reality environment
US9466317B2 (en) 2013-10-11 2016-10-11 Facebook, Inc. Generating a reference audio fingerprint for an audio signal associated with an event
EP2866465B1 (en) 2013-10-25 2020-07-22 Harman Becker Automotive Systems GmbH Spherical microphone array
US20150118960A1 (en) 2013-10-28 2015-04-30 Aliphcom Wearable communication device
US9215543B2 (en) 2013-12-03 2015-12-15 Cisco Technology, Inc. Microphone mute/unmute notification
USD727968S1 (en) 2013-12-17 2015-04-28 Panasonic Intellectual Property Management Co., Ltd. Digital video disc player
US20150185825A1 (en) 2013-12-30 2015-07-02 Daqri, Llc Assigning a virtual user interface to a physical object
USD718731S1 (en) 2014-01-02 2014-12-02 Samsung Electronics Co., Ltd. Television receiver
JP6289121B2 (ja) 2014-01-23 2018-03-07 キヤノン株式会社 音響信号処理装置、動画撮影装置およびそれらの制御方法
US9560451B2 (en) 2014-02-10 2017-01-31 Bose Corporation Conversation assistance system
US9351060B2 (en) 2014-02-14 2016-05-24 Sonic Blocks, Inc. Modular quick-connect A/V system and methods thereof
JP6281336B2 (ja) 2014-03-12 2018-02-21 沖電気工業株式会社 音声復号化装置及びプログラム
US9226062B2 (en) 2014-03-18 2015-12-29 Cisco Technology, Inc. Techniques to mitigate the effect of blocked sound at microphone arrays in a telepresence device
US9432768B1 (en) 2014-03-28 2016-08-30 Amazon Technologies, Inc. Beam forming for a wearable computer
JP2015194753A (ja) 2014-03-28 2015-11-05 船井電機株式会社 マイクロホン装置
US9516412B2 (en) 2014-03-28 2016-12-06 Panasonic Intellectual Property Management Co., Ltd. Directivity control apparatus, directivity control method, storage medium and directivity control system
US20150281832A1 (en) 2014-03-28 2015-10-01 Panasonic Intellectual Property Management Co., Ltd. Sound processing apparatus, sound processing system and sound processing method
GB2521881B (en) 2014-04-02 2016-02-10 Imagination Tech Ltd Auto-tuning of non-linear processor threshold
GB2519392B (en) 2014-04-02 2016-02-24 Imagination Tech Ltd Auto-tuning of an acoustic echo canceller
US10182280B2 (en) 2014-04-23 2019-01-15 Panasonic Intellectual Property Management Co., Ltd. Sound processing apparatus, sound processing system and sound processing method
USD743939S1 (en) 2014-04-28 2015-11-24 Samsung Electronics Co., Ltd. Speaker
EP2942975A1 (en) 2014-05-08 2015-11-11 Panasonic Corporation Directivity control apparatus, directivity control method, storage medium and directivity control system
US9414153B2 (en) 2014-05-08 2016-08-09 Panasonic Intellectual Property Management Co., Ltd. Directivity control apparatus, directivity control method, storage medium and directivity control system
US9596554B2 (en) 2014-05-26 2017-03-14 Vladimir Sherman Methods circuits devices systems and associated computer executable code for acquiring acoustic signals
USD740279S1 (en) 2014-05-29 2015-10-06 Compal Electronics, Inc. Chromebook with trapezoid shape
DE102014217344A1 (de) 2014-06-05 2015-12-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprechersystem
CN104036784B (zh) 2014-06-06 2017-03-08 华为技术有限公司 一种回声消除方法及装置
JP1525681S (zh) 2014-06-18 2017-05-22
US9589556B2 (en) 2014-06-19 2017-03-07 Yang Gao Energy adjustment of acoustic echo replica signal for speech enhancement
USD737245S1 (en) 2014-07-03 2015-08-25 Wall Audio, Inc. Planar loudspeaker
USD754092S1 (en) 2014-07-11 2016-04-19 Harman International Industries, Incorporated Portable loudspeaker
JP6149818B2 (ja) 2014-07-18 2017-06-21 沖電気工業株式会社 収音再生システム、収音再生装置、収音再生方法、収音再生プログラム、収音システム及び再生システム
EP3172541A4 (en) 2014-07-23 2018-03-28 The Australian National University Planar sensor array
US9762742B2 (en) 2014-07-24 2017-09-12 Conexant Systems, Llc Robust acoustic echo cancellation for loosely paired devices based on semi-blind multichannel demixing
JP6210458B2 (ja) 2014-07-30 2017-10-11 パナソニックＩｐマネジメント株式会社 故障検知システム及び故障検知方法
JP6446893B2 (ja) 2014-07-31 2019-01-09 富士通株式会社 エコー抑圧装置、エコー抑圧方法及びエコー抑圧用コンピュータプログラム
US20160031700A1 (en) 2014-08-01 2016-02-04 Pixtronix, Inc. Microelectromechanical microphone
US9326060B2 (en) 2014-08-04 2016-04-26 Apple Inc. Beamforming in varying sound pressure level
JP6202277B2 (ja) 2014-08-05 2017-09-27 パナソニックＩｐマネジメント株式会社 音声処理システム及び音声処理方法
DE112014006865B4 (de) 2014-08-13 2022-06-09 Mitsubishi Electric Corporation Echounterdrücker
US9940944B2 (en) 2014-08-19 2018-04-10 Qualcomm Incorporated Smart mute for a communication device
EP2988527A1 (en) 2014-08-21 2016-02-24 Patents Factory Ltd. Sp. z o.o. System and method for detecting location of sound sources in a three-dimensional space
US10269343B2 (en) 2014-08-28 2019-04-23 Analog Devices, Inc. Audio processing using an intelligent microphone
JP2016051038A (ja) 2014-08-29 2016-04-11 株式会社Ｊｖｃケンウッド ノイズゲート装置
US20160100092A1 (en) 2014-10-01 2016-04-07 Fortemedia, Inc. Object tracking device and tracking method thereof
US9521057B2 (en) 2014-10-14 2016-12-13 Amazon Technologies, Inc. Adaptive audio stream with latency compensation
GB2547063B (en) 2014-10-30 2018-01-31 Imagination Tech Ltd Noise estimator
GB2525947B (en) 2014-10-31 2016-06-22 Imagination Tech Ltd Automatic tuning of a gain controller
US20160150315A1 (en) 2014-11-20 2016-05-26 GM Global Technology Operations LLC System and method for echo cancellation
KR101990370B1 (ko) 2014-11-26 2019-06-18 한화테크윈 주식회사 카메라 시스템 및 카메라 시스템 동작 방법
US9654868B2 (en) 2014-12-05 2017-05-16 Stages Llc Multi-channel multi-domain source identification and tracking
US9860635B2 (en) 2014-12-15 2018-01-02 Panasonic Intellectual Property Management Co., Ltd. Microphone array, monitoring system, and sound pickup setting method
CN105790806B (zh) * 2014-12-19 2020-08-07 株式会社Ntt都科摩 混合波束赋形技术中的公共信号传输方法及装置
CN105812598B (zh) 2014-12-30 2019-04-30 展讯通信（上海）有限公司 一种降低回声的方法及装置
US9525934B2 (en) 2014-12-31 2016-12-20 Stmicroelectronics Asia Pacific Pte Ltd. Steering vector estimation for minimum variance distortionless response (MVDR) beamforming circuits, systems, and methods
USD754103S1 (en) 2015-01-02 2016-04-19 Harman International Industries, Incorporated Loudspeaker
JP2016146547A (ja) 2015-02-06 2016-08-12 パナソニックＩｐマネジメント株式会社 収音システム及び収音方法
US20160275961A1 (en) 2015-03-18 2016-09-22 Qualcomm Technologies International, Ltd. Structure for multi-microphone speech enhancement system
CN106162427B (zh) 2015-03-24 2019-09-17 青岛海信电器股份有限公司 一种声音获取元件的指向性调整方法和装置
US9716944B2 (en) 2015-03-30 2017-07-25 Microsoft Technology Licensing, Llc Adjustable audio beamforming
US9924224B2 (en) 2015-04-03 2018-03-20 The Nielsen Company (Us), Llc Methods and apparatus to determine a state of a media presentation device
US10567827B2 (en) 2015-04-10 2020-02-18 Sennheiser Electronic Gmbh & Co. Kg Method of detecting and synchronizing audio and video signals and audio/video detection and synchronization system
USD784299S1 (en) 2015-04-30 2017-04-18 Shure Acquisition Holdings, Inc. Array microphone assembly
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
WO2016179211A1 (en) 2015-05-04 2016-11-10 Rensselaer Polytechnic Institute Coprime microphone array system
US10028053B2 (en) 2015-05-05 2018-07-17 Wave Sciences, LLC Portable computing device microphone array
WO2016183791A1 (zh) 2015-05-19 2016-11-24 华为技术有限公司 一种语音信号处理方法及装置
USD801285S1 (en) 2015-05-29 2017-10-31 Optical Cable Corporation Ceiling mount box
US10412483B2 (en) 2015-05-30 2019-09-10 Audix Corporation Multi-element shielded microphone and suspension system
US10452339B2 (en) 2015-06-05 2019-10-22 Apple Inc. Mechanism for retrieval of previously captured audio
US10909384B2 (en) 2015-07-14 2021-02-02 Panasonic Intellectual Property Management Co., Ltd. Monitoring system and monitoring method
TWD179475S (zh) 2015-07-14 2016-11-11 宏碁股份有限公司 筆記型電腦之部分
CN106403016B (zh) 2015-07-30 2019-07-26 Lg电子株式会社 空调机的室内机
EP3131311B1 (en) 2015-08-14 2019-06-19 Nokia Technologies Oy Monitoring
US20170064451A1 (en) 2015-08-25 2017-03-02 New York University Ubiquitous sensing environment
US9655001B2 (en) 2015-09-24 2017-05-16 Cisco Technology, Inc. Cross mute for native radio channels
US20180292079A1 (en) 2015-10-07 2018-10-11 Tony J. Branham Lighted mirror with sound system
US9961437B2 (en) 2015-10-08 2018-05-01 Signal Essence, LLC Dome shaped microphone array with circularly distributed microphones
USD787481S1 (en) 2015-10-21 2017-05-23 Cisco Technology, Inc. Microphone support
CN105355210B (zh) 2015-10-30 2020-06-23 百度在线网络技术（北京）有限公司 用于远场语音识别的预处理方法和装置
EP3360250B1 (en) 2015-11-18 2020-09-02 Huawei Technologies Co., Ltd. A sound signal processing apparatus and method for enhancing a sound signal
US11064291B2 (en) 2015-12-04 2021-07-13 Sennheiser Electronic Gmbh & Co. Kg Microphone array system
US9894434B2 (en) 2015-12-04 2018-02-13 Sennheiser Electronic Gmbh & Co. Kg Conference system with a microphone array system and a method of speech acquisition in a conference system
US9479885B1 (en) 2015-12-08 2016-10-25 Motorola Mobility Llc Methods and apparatuses for performing null steering of adaptive microphone array
US9641935B1 (en) 2015-12-09 2017-05-02 Motorola Mobility Llc Methods and apparatuses for performing adaptive equalization of microphone arrays
USD788073S1 (en) 2015-12-29 2017-05-30 Sdi Technologies, Inc. Mono bluetooth speaker
US9479627B1 (en) 2015-12-29 2016-10-25 Gn Audio A/S Desktop speakerphone
CN105548998B (zh) 2016-02-02 2018-03-30 北京地平线机器人技术研发有限公司 基于麦克阵列的声音定位装置和方法
US9721582B1 (en) 2016-02-03 2017-08-01 Google Inc. Globally optimized least-squares post-filtering for speech enhancement
US10460744B2 (en) * 2016-02-04 2019-10-29 Xinxiao Zeng Methods, systems, and media for voice communication
US10537300B2 (en) 2016-04-25 2020-01-21 Wisconsin Alumni Research Foundation Head mounted microphone array for tinnitus diagnosis
US9851938B2 (en) 2016-04-26 2017-12-26 Analog Devices, Inc. Microphone arrays and communication systems for directional reception
USD819607S1 (en) 2016-04-26 2018-06-05 Samsung Electronics Co., Ltd. Microphone
DK3509325T3 (da) 2016-05-30 2021-03-22 Oticon As Høreapparat, der omfatter en stråleformerfiltreringsenhed, der omfatter en udglatningsenhed
GB201609784D0 (en) 2016-06-03 2016-07-20 Craven Peter G And Travis Christopher Microphone array providing improved horizontal directivity
US9659576B1 (en) 2016-06-13 2017-05-23 Biamp Systems Corporation Beam forming and acoustic echo cancellation with mutual adaptation control
ITUA20164622A1 (it) 2016-06-23 2017-12-23 St Microelectronics Srl Procedimento di beamforming basato su matrici di microfoni e relativo apparato
JP7404067B2 (ja) 2016-07-22 2023-12-25 ドルビー ラボラトリーズ ライセンシング コーポレイション ライブ音楽実演のマルチメディア・コンテンツのネットワーク・ベースの処理および配送
USD841589S1 (en) 2016-08-03 2019-02-26 Gedia Gebrueder Dingerkus Gmbh Housings for electric conductors
CN106251857B (zh) 2016-08-16 2019-08-20 青岛歌尔声学科技有限公司 声源方向判断装置、方法及麦克风指向性调节系统、方法
JP6548619B2 (ja) 2016-08-31 2019-07-24 ミネベアミツミ株式会社 モータ制御装置および脱調状態検出方法
US9628596B1 (en) 2016-09-09 2017-04-18 Sorenson Ip Holdings, Llc Electronic device including a directional microphone
US10454794B2 (en) 2016-09-20 2019-10-22 Cisco Technology, Inc. 3D wireless network monitoring using virtual reality and augmented reality
US9794720B1 (en) 2016-09-22 2017-10-17 Sonos, Inc. Acoustic position measurement
JP1580363S (zh) 2016-09-27 2017-07-03
CN109906616B (zh) 2016-09-29 2021-05-21 杜比实验室特许公司 用于确定一或多个音频源的一或多个音频表示的方法、系统和设备
US10475471B2 (en) 2016-10-11 2019-11-12 Cirrus Logic, Inc. Detection of acoustic impulse events in voice applications using a neural network
US9930448B1 (en) 2016-11-09 2018-03-27 Northwestern Polytechnical University Concentric circular differential microphone arrays and associated beamforming
US9980042B1 (en) 2016-11-18 2018-05-22 Stages Llc Beamformer direction of arrival and orientation analysis system
EP3542548A1 (en) 2016-11-21 2019-09-25 Harman Becker Automotive Systems GmbH Beamsteering
GB2557219A (en) 2016-11-30 2018-06-20 Nokia Technologies Oy Distributed audio capture and mixing controlling
USD811393S1 (en) 2016-12-28 2018-02-27 Samsung Display Co., Ltd. Display device
KR102420175B1 (ko) 2016-12-30 2022-07-12 하만 베커 오토모티브 시스템즈 게엠베하 음향 반향 제거
US10552014B2 (en) 2017-01-10 2020-02-04 Cast Group Of Companies Inc. Systems and methods for tracking and interacting with zones in 3D space
US10021515B1 (en) 2017-01-12 2018-07-10 Oracle International Corporation Method and system for location estimation
US10097920B2 (en) 2017-01-13 2018-10-09 Bose Corporation Capturing wide-band audio using microphone arrays and passive directional acoustic elements
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
CN106851036B (zh) 2017-01-20 2019-08-30 广州广哈通信股份有限公司 一种共线语音会议分散混音系统
WO2018140444A1 (en) 2017-01-26 2018-08-02 Walmart Apollo, Llc Shopping cart and associated systems and methods
WO2018140618A1 (en) 2017-01-27 2018-08-02 Shure Acquisiton Holdings, Inc. Array microphone module and system
US10389885B2 (en) 2017-02-01 2019-08-20 Cisco Technology, Inc. Full-duplex adaptive echo cancellation in a conference endpoint
US10791153B2 (en) 2017-02-02 2020-09-29 Bose Corporation Conference room audio setup
EP3593345A1 (en) 2017-03-09 2020-01-15 Avnera Corporation Real-time acoustic processor
USD860319S1 (en) 2017-04-21 2019-09-17 Any Pte. Ltd Electronic display unit
US20180313558A1 (en) 2017-04-27 2018-11-01 Cisco Technology, Inc. Smart ceiling and floor tiles
CN107221336B (zh) 2017-05-13 2020-08-21 深圳海岸语音技术有限公司 一种增强目标语音的装置及其方法
US10165386B2 (en) 2017-05-16 2018-12-25 Nokia Technologies Oy VR audio superzoom
WO2018211806A1 (ja) 2017-05-19 2018-11-22 株式会社オーディオテクニカ 音声信号処理装置
US10153744B1 (en) 2017-08-02 2018-12-11 2236008 Ontario Inc. Automatically tuning an audio compressor to prevent distortion
US11798544B2 (en) 2017-08-07 2023-10-24 Polycom, Llc Replying to a spoken command
KR102478951B1 (ko) 2017-09-04 2022-12-20 삼성전자주식회사 비선형 특성을 갖는 오디오 필터를 이용하여 오디오 신호를 처리하는 방법 및 장치
US9966059B1 (en) 2017-09-06 2018-05-08 Amazon Technologies, Inc. Reconfigurale fixed beam former using given microphone array
CN111052766B (zh) 2017-09-07 2021-07-27 三菱电机株式会社 噪音去除装置及噪音去除方法
USD883952S1 (en) 2017-09-11 2020-05-12 Clean Energy Labs, Llc Audio speaker
EP4459410A3 (en) 2017-09-27 2025-01-15 Engineered Controls International, LLC Combination regulator valve
USD888020S1 (en) 2017-10-23 2020-06-23 Raven Technology (Beijing) Co., Ltd. Speaker cover
US20190166424A1 (en) 2017-11-28 2019-05-30 Invensense, Inc. Microphone mesh network
USD860997S1 (en) 2017-12-11 2019-09-24 Crestron Electronics, Inc. Lid and bezel of flip top unit
EP3499915B1 (en) * 2017-12-13 2023-06-21 Oticon A/s A hearing device and a binaural hearing system comprising a binaural noise reduction system
CN108172235B (zh) 2017-12-26 2021-05-14 南京信息工程大学 基于维纳后置滤波的ls波束形成混响抑制方法
US10979805B2 (en) 2018-01-04 2021-04-13 Stmicroelectronics, Inc. Microphone array auto-directive adaptive wideband beamforming using orientation information from MEMS sensors
USD864136S1 (en) 2018-01-05 2019-10-22 Samsung Electronics Co., Ltd. Television receiver
US10720173B2 (en) 2018-02-21 2020-07-21 Bose Corporation Voice capture processing modified by back end audio processing state
JP7022929B2 (ja) 2018-02-26 2022-02-21 パナソニックＩｐマネジメント株式会社 ワイヤレスマイクシステム、受信機及び無線同期方法
USD857873S1 (en) 2018-03-02 2019-08-27 Panasonic Intellectual Property Management Co., Ltd. Ceiling ventilation fan
US10566008B2 (en) 2018-03-02 2020-02-18 Cirrus Logic, Inc. Method and apparatus for acoustic echo suppression
US20190295540A1 (en) 2018-03-23 2019-09-26 Cirrus Logic International Semiconductor Ltd. Voice trigger validator
CN208190895U (zh) 2018-03-23 2018-12-04 阿里巴巴集团控股有限公司 拾音模组、电子设备及贩卖机
CN108510987B (zh) 2018-03-26 2020-10-23 北京小米移动软件有限公司 语音处理方法及装置
EP3553968A1 (en) 2018-04-13 2019-10-16 Peraso Technologies Inc. Single-carrier wideband beamforming method and system
EP3803867B1 (en) 2018-05-31 2024-01-10 Shure Acquisition Holdings, Inc. Systems and methods for intelligent voice activation for auto-mixing
US11494158B2 (en) 2018-05-31 2022-11-08 Shure Acquisition Holdings, Inc. Augmented reality microphone pick-up pattern visualization
US11523212B2 (en) 2018-06-01 2022-12-06 Shure Acquisition Holdings, Inc. Pattern-forming microphone array
US11297423B2 (en) * 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
JP7431757B2 (ja) 2018-06-15 2024-02-15 シュアー アクイジッション ホールディングス インコーポレイテッド 統合会議プラットフォームのためのシステム及び方法
DK3588982T5 (da) 2018-06-25 2024-02-26 Oticon As Høreanordning der omfatter et feedback-reduktionssystem
US10210882B1 (en) 2018-06-25 2019-02-19 Biamp Systems, LLC Microphone array with automated adaptive beam tracking
CN109087664B (zh) 2018-08-22 2022-09-02 中国科学技术大学 语音增强方法
EP3854108A1 (en) 2018-09-20 2021-07-28 Shure Acquisition Holdings, Inc. Adjustable lobe shape for array microphones
US11109133B2 (en) 2018-09-21 2021-08-31 Shure Acquisition Holdings, Inc. Array microphone module and system
US11218802B1 (en) * 2018-09-25 2022-01-04 Amazon Technologies, Inc. Beamformer rotation
EP3629602A1 (en) * 2018-09-27 2020-04-01 Oticon A/s A hearing device and a hearing system comprising a multitude of adaptive two channel beamformers
JP7334406B2 (ja) 2018-10-24 2023-08-29 ヤマハ株式会社 アレイマイクロフォンおよび収音方法
US10972835B2 (en) 2018-11-01 2021-04-06 Sennheiser Electronic Gmbh & Co. Kg Conference system with a microphone array system and a method of speech acquisition in a conference system
US10887467B2 (en) 2018-11-20 2021-01-05 Shure Acquisition Holdings, Inc. System and method for distributed call processing and audio reinforcement in conferencing environments
CN109727604B (zh) 2018-12-14 2023-11-10 上海蔚来汽车有限公司 用于语音识别前端的频域回声消除方法及计算机储存介质
US10959018B1 (en) 2019-01-18 2021-03-23 Amazon Technologies, Inc. Method for autonomous loudspeaker room adaptation
CN109862200B (zh) 2019-02-22 2021-02-12 北京达佳互联信息技术有限公司 语音处理方法、装置、电子设备及存储介质
US11070913B2 (en) 2019-02-27 2021-07-20 Crestron Electronics, Inc. Millimeter wave sensor used to optimize performance of a beamforming microphone array
CN110010147B (zh) 2019-03-15 2021-07-27 厦门大学 一种麦克风阵列语音增强的方法和系统
WO2020191354A1 (en) 2019-03-21 2020-09-24 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
EP3942845A1 (en) 2019-03-21 2022-01-26 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition functionality
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
USD924189S1 (en) 2019-04-29 2021-07-06 Lg Electronics Inc. Television receiver
USD900074S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900070S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900071S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900073S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
USD900072S1 (en) 2019-05-15 2020-10-27 Shure Acquisition Holdings, Inc. Housing for a ceiling array microphone
US11127414B2 (en) 2019-07-09 2021-09-21 Blackberry Limited System and method for reducing distortion and echo leakage in hands-free communication
US10984815B1 (en) 2019-09-27 2021-04-20 Cypress Semiconductor Corporation Techniques for removing non-linear echo in acoustic echo cancellers
KR102647154B1 (ko) 2019-12-31 2024-03-14 삼성전자주식회사 디스플레이 장치

Also Published As

Publication number Publication date
US20220240008A1 (en) 2022-07-28
WO2022165007A1 (en) 2022-08-04
US11785380B2 (en) 2023-10-10
JP2024505068A (ja) 2024-02-02
EP4285605A1 (en) 2023-12-06

Similar Documents

Publication Publication Date Title
US11800281B2 (en) Pattern-forming microphone array
US11770650B2 (en) Endfire linear array microphone
US11765498B2 (en) Microphone array system
CN108370470B (zh) 会议系统以及会议系统中的语音获取方法
JP7630495B2 (ja) 指向性が改善された一次元アレイマイクロホン
KR101566649B1 (ko) 근거리 널 및 빔 형성
US9020163B2 (en) Near-field null and beamforming
US9294838B2 (en) Sound capture system
US11785380B2 (en) Hybrid audio beamforming system
US12250526B2 (en) Audio beamforming with nulling control system and methods
WO2021260260A1 (en) Suppressing spatial noise in multi-microphone devices
US20240397260A1 (en) Array microphone aperture predistortion for improved directivity
US20240249742A1 (en) Partially adaptive audio beamforming systems and methods
WO2024238131A1 (en) Multi-dimensional array microphone

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination