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RU95105454A - Блок дифференциального микрофона с шумопоглощением - Google Patents

Блок дифференциального микрофона с шумопоглощением

Info

Publication number
RU95105454A
RU95105454A RU95105454/28A RU95105454A RU95105454A RU 95105454 A RU95105454 A RU 95105454A RU 95105454/28 A RU95105454/28 A RU 95105454/28A RU 95105454 A RU95105454 A RU 95105454A RU 95105454 A RU95105454 A RU 95105454A
Authority
RU
Russia
Prior art keywords
microphone
unit
noise reduction
field
differential microphone
Prior art date
Application number
RU95105454/28A
Other languages
English (en)
Inventor
Спеджеон Бартлетт Чарльз
Us]
Энтони Зунига Майкл
Original Assignee
Эйти энд Ти Корп. (US)
Эйти энд Ти Корп.
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 Эйти энд Ти Корп. (US), Эйти энд Ти Корп. filed Critical Эйти энд Ти Корп. (US)
Publication of RU95105454A publication Critical patent/RU95105454A/ru

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • 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
    • 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
    • H04R2201/403—Linear 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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/004—Monitoring arrangements; Testing arrangements for microphones
    • H04R29/005—Microphone arrays
    • H04R29/006—Microphone matching

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Set Structure (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

Повышенное качество работы микрофона достигается путем расположения блока микрофона производной второго порядка так, что радиально расходящиеся входные сигналы акустического поля в ближней зоне создают в микрофоне электрический сигнал, пропорциональный пространственной производной первого порядка поля акустического давления.

Claims (1)

  1. Повышенное качество работы микрофона достигается путем расположения блока микрофона производной второго порядка так, что радиально расходящиеся входные сигналы акустического поля в ближней зоне создают в микрофоне электрический сигнал, пропорциональный пространственной производной первого порядка поля акустического давления.
RU95105454/28A 1994-04-21 1995-04-14 Блок дифференциального микрофона с шумопоглощением RU95105454A (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/230.955 1994-04-21
US08/230,955 US5473684A (en) 1994-04-21 1994-04-21 Noise-canceling differential microphone assembly

Publications (1)

Publication Number Publication Date
RU95105454A true RU95105454A (ru) 1996-12-10

Family

ID=22867220

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95105454/28A RU95105454A (ru) 1994-04-21 1995-04-14 Блок дифференциального микрофона с шумопоглощением

Country Status (10)

Country Link
US (1) US5473684A (ru)
EP (1) EP0679044A3 (ru)
JP (1) JP3014294B2 (ru)
KR (1) KR950035253A (ru)
CN (1) CN1113627A (ru)
CA (1) CA2143227C (ru)
FI (1) FI951885L (ru)
RU (1) RU95105454A (ru)
SG (1) SG28255A1 (ru)
TW (1) TW265506B (ru)

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US6278377B1 (en) 1999-08-25 2001-08-21 Donnelly Corporation Indicator for vehicle accessory
US7110553B1 (en) * 1998-02-03 2006-09-19 Etymotic Research, Inc. Directional microphone assembly for mounting behind a surface
AU2797599A (en) * 1998-03-02 1999-09-20 Mwm Acoustics, Llc Directional microphone system
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US8682005B2 (en) 1999-11-19 2014-03-25 Gentex Corporation Vehicle accessory microphone
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US7245726B2 (en) * 2001-10-03 2007-07-17 Adaptive Technologies, Inc. Noise canceling microphone system and method for designing the same
US6978010B1 (en) * 2002-03-21 2005-12-20 Bellsouth Intellectual Property Corp. Ambient noise cancellation for voice communication device
WO2004095878A2 (en) * 2003-04-23 2004-11-04 Rh Lyon Corp Method and apparatus for sound transduction with minimal interference from background noise and minimal local acoustic radiation
US20040264726A1 (en) * 2003-06-30 2004-12-30 Gauger Daniel M. Microphoning
US8331582B2 (en) * 2003-12-01 2012-12-11 Wolfson Dynamic Hearing Pty Ltd Method and apparatus for producing adaptive directional signals
JP2005249816A (ja) * 2004-03-01 2005-09-15 Internatl Business Mach Corp <Ibm> 信号強調装置、方法及びプログラム、並びに音声認識装置、方法及びプログラム
US7460024B1 (en) 2006-01-17 2008-12-02 National Semiconductor Corporation Active sensor circuitry for operating at low power and low duty cycle while monitoring occurrence of anticipated event
US7864969B1 (en) 2006-02-28 2011-01-04 National Semiconductor Corporation Adaptive amplifier circuitry for microphone array
US7676052B1 (en) 2006-02-28 2010-03-09 National Semiconductor Corporation Differential microphone assembly
GB2445984B (en) * 2007-01-25 2011-12-07 Sonaptic Ltd Ambient noise reduction
US7953233B2 (en) * 2007-03-20 2011-05-31 National Semiconductor Corporation Synchronous detection and calibration system and method for differential acoustic sensors
NZ554060A (en) * 2007-03-21 2008-11-28 Waikatolink Ltd Sensor assembly
US11217237B2 (en) 2008-04-14 2022-01-04 Staton Techiya, Llc Method and device for voice operated control
US20090010453A1 (en) * 2007-07-02 2009-01-08 Motorola, Inc. Intelligent gradient noise reduction system
US8031881B2 (en) * 2007-09-18 2011-10-04 Starkey Laboratories, Inc. Method and apparatus for microphone matching for wearable directional hearing device using wearer's own voice
JP2009130619A (ja) 2007-11-22 2009-06-11 Funai Electric Advanced Applied Technology Research Institute Inc マイクロフォンシステム、音声入力装置及びこれらの製造方法
US9247346B2 (en) 2007-12-07 2016-01-26 Northern Illinois Research Foundation Apparatus, system and method for noise cancellation and communication for incubators and related devices
US9129291B2 (en) 2008-09-22 2015-09-08 Personics Holdings, Llc Personalized sound management and method
US8229126B2 (en) * 2009-03-13 2012-07-24 Harris Corporation Noise error amplitude reduction
CN101834584A (zh) * 2010-05-17 2010-09-15 南京大学 高声强脉冲声发生系统
US20120076320A1 (en) * 2010-09-28 2012-03-29 Bose Corporation Fine/Coarse Gain Adjustment
US20120076321A1 (en) * 2010-09-28 2012-03-29 Bose Corporation Single Microphone for Noise Rejection and Noise Measurement
US8923522B2 (en) * 2010-09-28 2014-12-30 Bose Corporation Noise level estimator
US8798278B2 (en) * 2010-09-28 2014-08-05 Bose Corporation Dynamic gain adjustment based on signal to ambient noise level
US9648421B2 (en) 2011-12-14 2017-05-09 Harris Corporation Systems and methods for matching gain levels of transducers
CN102595295B (zh) * 2012-03-06 2015-08-05 歌尔声学股份有限公司 一种mems麦克风
US9124220B2 (en) 2013-03-14 2015-09-01 Robert Bosch Gmbh Differential microphone with dual polarity bias
JP7603064B2 (ja) 2019-10-10 2024-12-19 シェンツェン・ショックス・カンパニー・リミテッド 音響設備
CN112653968B (zh) * 2019-10-10 2023-04-25 深圳市韶音科技有限公司 用于传声功能的头戴式的电子设备
CN112163339B (zh) * 2020-09-28 2024-05-03 国网安徽省电力有限公司经济技术研究院 用于计算弹性闭孔材料隔声性能的方法、系统及存储介质
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Also Published As

Publication number Publication date
CA2143227C (en) 1999-01-12
FI951885A7 (fi) 1995-10-22
FI951885A0 (fi) 1995-04-20
FI951885L (fi) 1995-10-22
JP3014294B2 (ja) 2000-02-28
JPH07322388A (ja) 1995-12-08
SG28255A1 (en) 1996-04-01
TW265506B (ru) 1995-12-11
US5473684A (en) 1995-12-05
KR950035253A (ko) 1995-12-30
CN1113627A (zh) 1995-12-20
CA2143227A1 (en) 1995-10-22
EP0679044A2 (en) 1995-10-25
EP0679044A3 (en) 1996-03-20

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