KR101164299B1 - 소리 입력 장치 - Google Patents
소리 입력 장치 Download PDFInfo
- Publication number
- KR101164299B1 KR101164299B1 KR1020080122825A KR20080122825A KR101164299B1 KR 101164299 B1 KR101164299 B1 KR 101164299B1 KR 1020080122825 A KR1020080122825 A KR 1020080122825A KR 20080122825 A KR20080122825 A KR 20080122825A KR 101164299 B1 KR101164299 B1 KR 101164299B1
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- KR
- South Korea
- Prior art keywords
- signal
- noise
- microphone
- low pass
- sound
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- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- 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
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
-
- 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
- H04R2430/21—Direction finding using differential microphone array [DMA]
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Quality & Reliability (AREA)
- Multimedia (AREA)
- General Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Function (AREA)
Abstract
Description
Claims (12)
- 소음을 포함하는 소리를 수취하며 그 소리에 따라 제 1 신호를 발생하도록 형성된 차동 마이크로폰; 소음을 검출하며 검출된 소음에 따라 제 2 신호를 발생하도록 형성된 검출기; 및 상기 제 1 신호의 고 주파수 성분들 중 하나 이상의 억압과 상기 제2 신호를 기초로 하여 상기 제 1 신호의 억압될 주파수 밴드의 변경을 제어하도록 형성된 제어기를 포함하는 것을 특징으로 하는 소리 입력 장치.
- 소음을 포함하는 소리를 수취하며 그 소리에 따라 신호를 발생하도록 형성된 마이크로폰; 소음과 관계되는 정보를 수취하도록 형성된 정보 수취기; 및 상기 신호의 고 주파수 성분들 중 하나 이상의 억압과 상기 정보를 기초로 하여 제1 신호의 억압될 주파수 밴드의 변경을 제어하도록 형선된 제어기를 포함하는 것을 특징으로 하는 소리 입력 장치.
- 제 2 항에 있어서, 제어기가 고 주파수 성분을 억압하도록 된 저주파 통과 필터를 포함하며; 정보를 기초로 하여 신호가 저주파 통과 필터를 통과할 지 아닐지를 제어기가 제어하는 것을 특징으로 하는 소리 입력 장치.
- 제 2 항에 있어서, 제어기가 고 주파수 성분을 억압하도록 된 다수의 저주파 통과 필터를 포함하고, 저주파 통과 필터의 각각은 상이한 주파수 밴드와 관계되며; 제어기가 정보를 기초로 하여 신호를 통과시킬 저주파 통과 필터를 변경시키는 것을 특징으로 하는 소리 입력 장치.
- 제 2 항에 있어서, 제어기가 고 주파수 성분을 억압하도록 된 다수의 저주파 통과 필터를 포함하고; 제어기가 정보를 기초로 하여 저주파 통과 필터의 커트오프 주파수를 변경시키는 것을 특징으로 하는 소리 입력 장치.
- 제 2 항에 있어서, 제어기가 고 주파수 성분을 억압하기 위한 일차 커트오프 특성을 갖는 저주파 통과 필터를 포함하는 것을 특징으로 하는 소리 입력 장치.
- 제 2 항에 있어서, 제어기가 저주파 통과 필터를 포함하고, 저주파 통과 필터의 커트오프 주파수가 1 KHz 이상의 범위 또는 5 KHz 이하의 범위내인 것을 특징으로 하는 소리 입력 장치.
- 제 1 항에 있어서, 검출기가 제2 신호를 발생하기 위해 차동 마이크로폰의 지연 밸런스를 변경하도록 된 발생기를 포함하는 것을 특징으로 하는 소리 입력 장치.
- 제 1 항에 있어서, 검출기가 제 1 신호를 기준으로 함으로써 제 2 신호를 발생하는 것을 특징으로 하는 소리 입력 장치.
- 제 1 항에 있어서, 차동 마이크로폰이 제 1 진동 부재를 갖는 제 1 마이크로폰; 제 2 진동 부재를 갖는 제 2 마이크로폰; 및 제 1 마이크로폰에 의해 얻은 제 1 전압 신호와 제 2 마이크로폰에 의해 얻은 제 2 전압 신호 사이의 차이를 나타내는 차동 신호를 발생하도록 형성된 차동 신호 발생기를 포함하며; 검출기가, 제 2 전압 신호에 소음 검출을 위한 지연을 주도록 형성된 제 1 유닛; 및 제 1 전압 신호와 제 1 유닛에 의해 지연이 주어진 제 2 전압 신호 사이의 차이를 기초로 하여 제 2 신호를 발생하도록 형성된 제 2 유닛을 포함하는 것을 특징으로 하는 소리 입력 장치.
- 제 10 항에 있어서, 지연이 음속에 의해 제 1 및 제 2 진동 부재들의 중심들 사이의 거리를 분할함으로써 얻은 시간으로 세팅되는 것을 특징으로 하는 소리 입력 장치.
- 제 1 항에 있어서, 소리 정보를 출력하도록 된 확성기; 및 제 2 신호를 기초로 하여 확성기의 소리 레벨을 제어하도록 된 소리 레벨 제어기를 부가로 포함하는 것을 특징으로 하는 소리 입력 장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007317719A JP5097523B2 (ja) | 2007-12-07 | 2007-12-07 | 音声入力装置 |
JPJP-P-2007-317719 | 2007-12-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090060178A KR20090060178A (ko) | 2009-06-11 |
KR101164299B1 true KR101164299B1 (ko) | 2012-07-09 |
Family
ID=40445402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020080122825A Active KR101164299B1 (ko) | 2007-12-07 | 2008-12-05 | 소리 입력 장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8249273B2 (ko) |
EP (1) | EP2068309B1 (ko) |
JP (1) | JP5097523B2 (ko) |
KR (1) | KR101164299B1 (ko) |
CN (1) | CN101453684B (ko) |
DE (1) | DE602008005826D1 (ko) |
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CN106909360A (zh) * | 2015-12-23 | 2017-06-30 | 塞舌尔商元鼎音讯股份有限公司 | 一种电子装置、声音播放装置及均衡器调整方法 |
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CN112889296B (zh) | 2018-09-20 | 2025-01-10 | 舒尔获得控股公司 | 用于阵列麦克风的可调整的波瓣形状 |
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 |
EP3942842A1 (en) | 2019-03-21 | 2022-01-26 | Shure Acquisition Holdings, Inc. | Housings and associated design features for ceiling array microphones |
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2007
- 2007-12-07 JP JP2007317719A patent/JP5097523B2/ja not_active Expired - Fee Related
-
2008
- 2008-12-05 KR KR1020080122825A patent/KR101164299B1/ko active Active
- 2008-12-08 EP EP08021309A patent/EP2068309B1/en not_active Not-in-force
- 2008-12-08 DE DE602008005826T patent/DE602008005826D1/de active Active
- 2008-12-08 CN CN200810184541.9A patent/CN101453684B/zh not_active Expired - Fee Related
- 2008-12-08 US US12/330,227 patent/US8249273B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20030147538A1 (en) | 2002-02-05 | 2003-08-07 | Mh Acoustics, Llc, A Delaware Corporation | Reducing noise in audio systems |
Also Published As
Publication number | Publication date |
---|---|
CN101453684B (zh) | 2014-05-07 |
KR20090060178A (ko) | 2009-06-11 |
US8249273B2 (en) | 2012-08-21 |
DE602008005826D1 (de) | 2011-05-12 |
EP2068309B1 (en) | 2011-03-30 |
JP2009141817A (ja) | 2009-06-25 |
JP5097523B2 (ja) | 2012-12-12 |
US20090147968A1 (en) | 2009-06-11 |
CN101453684A (zh) | 2009-06-10 |
EP2068309A1 (en) | 2009-06-10 |
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