EA200000690A1 - Цифровой и аналоговый направленный микрофон - Google Patents

Цифровой и аналоговый направленный микрофон

Info

Publication number
EA200000690A1
EA200000690A1 EA200000690A EA200000690A EA200000690A1 EA 200000690 A1 EA200000690 A1 EA 200000690A1 EA 200000690 A EA200000690 A EA 200000690A EA 200000690 A EA200000690 A EA 200000690A EA 200000690 A1 EA200000690 A1 EA 200000690A1
Authority
EA
Eurasian Patent Office
Prior art keywords
microphone
signals
tube
linear
linear microphone
Prior art date
Application number
EA200000690A
Other languages
English (en)
Other versions
EA002094B1 (ru
Inventor
Жаклин Грин
Роберт Т. Грин III
Тадаси Кикутани
Original Assignee
Аудио-Текника, Ю.С., Инк.
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 Аудио-Текника, Ю.С., Инк. filed Critical Аудио-Текника, Ю.С., Инк.
Publication of EA200000690A1 publication Critical patent/EA200000690A1/ru
Publication of EA002094B1 publication Critical patent/EA002094B1/ru

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/01—Noise reduction using microphones having different directional characteristics

Landscapes

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

Abstract

(57) Направленный микрофон содержит линейный микрофон (16), имеющий удлиненную трубку, которая рассчитана так, что определяет направленность на частотах выше некоторой заданной частоты и, по меньшей мере, четыре контрольных микрофона (20, 22, 24, 26), расположенные вокруг указанного линейного микрофона (16). Сигнальный процессор (50), который электрически подключен к линейному микрофону и контрольным микрофонам, вырабатывает сигналы (от 96) нейтрализации помех из части спектров сигналов контрольных микрофонов (20, 22, 24, 26), которые имеют частоты, лежащие, в общем случае, ниже заданной частоты. Сигнальный процессор (50) смешивает (98) нейтрализующие сигналы с сигналом от линейного микрофона (16), чтобы получить выходной сигнал (100), в котором сигналы, пришедшие с направления, фронтального по отношению к направленному микрофону, в направлении продольной оси трубки, усиливаются, а сигналы, пришедшие с направлений, отличных от фронтального и продольной оси трубки, подавляются.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200000690A 1997-12-22 1998-12-21 Цифровой и аналоговый направленный микрофон EA002094B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/995,714 US6084973A (en) 1997-12-22 1997-12-22 Digital and analog directional microphone
PCT/US1998/027326 WO1999033324A1 (en) 1997-12-22 1998-12-21 Digital and analog directional microphone

Publications (2)

Publication Number Publication Date
EA200000690A1 true EA200000690A1 (ru) 2000-12-25
EA002094B1 EA002094B1 (ru) 2001-12-24

Family

ID=25542128

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200000690A EA002094B1 (ru) 1997-12-22 1998-12-21 Цифровой и аналоговый направленный микрофон

Country Status (15)

Country Link
US (1) US6084973A (ru)
EP (1) EP1057364A4 (ru)
JP (1) JP2001527370A (ru)
KR (1) KR20010033367A (ru)
CN (1) CN1160998C (ru)
AU (1) AU742120B2 (ru)
BR (1) BR9814316A (ru)
CA (1) CA2316378C (ru)
EA (1) EA002094B1 (ru)
IL (1) IL136578A (ru)
NO (1) NO20003222L (ru)
NZ (1) NZ504915A (ru)
PL (1) PL344258A1 (ru)
TW (1) TW425827B (ru)
WO (1) WO1999033324A1 (ru)

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US6178248B1 (en) * 1997-04-14 2001-01-23 Andrea Electronics Corporation Dual-processing interference cancelling system and method
GB9922654D0 (en) * 1999-09-27 1999-11-24 Jaber Marwan Noise suppression system
US6594367B1 (en) * 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
US20020131580A1 (en) * 2001-03-16 2002-09-19 Shure Incorporated Solid angle cross-talk cancellation for beamforming arrays
DE10119266A1 (de) * 2001-04-20 2002-10-31 Infineon Technologies Ag Programmgesteuerte Einheit
JP3940662B2 (ja) * 2001-11-22 2007-07-04 株式会社東芝 音響信号処理方法及び音響信号処理装置及び音声認識装置
US6810125B2 (en) * 2002-02-04 2004-10-26 Sabine, Inc. Microphone emulation
US20030161485A1 (en) * 2002-02-27 2003-08-28 Shure Incorporated Multiple beam automatic mixing microphone array processing via speech detection
CA2420989C (en) * 2002-03-08 2006-12-05 Gennum Corporation Low-noise directional microphone system
US20040114772A1 (en) * 2002-03-21 2004-06-17 David Zlotnick Method and system for transmitting and/or receiving audio signals with a desired direction
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
US20070009120A1 (en) * 2002-10-18 2007-01-11 Algazi V R Dynamic binaural sound capture and reproduction in focused or frontal applications
US7333622B2 (en) * 2002-10-18 2008-02-19 The Regents Of The University Of California Dynamic binaural sound capture and reproduction
EP1599067B1 (en) * 2004-05-21 2013-05-01 Epcos Pte Ltd Detection and control of diaphragm collapse in condenser microphones
US7305886B2 (en) * 2004-06-07 2007-12-11 Board Of Trustees Of Michigan State University Noise detecting apparatus
JP4965847B2 (ja) * 2005-10-27 2012-07-04 ヤマハ株式会社 音声信号送受信装置
WO2007052374A1 (en) * 2005-11-02 2007-05-10 Yamaha Corporation Voice signal transmitting/receiving apparatus
US7711136B2 (en) 2005-12-02 2010-05-04 Fortemedia, Inc. Microphone array in housing receiving sound via guide tube
JP5194434B2 (ja) * 2006-11-07 2013-05-08 ソニー株式会社 ノイズキャンセリングシステムおよびノイズキャンセル方法
JP2009239631A (ja) * 2008-03-27 2009-10-15 Funai Electric Advanced Applied Technology Research Institute Inc マイクロフォンユニット、接話型の音声入力装置、情報処理システム、及びマイクロフォンユニットの製造方法
US9392360B2 (en) * 2007-12-11 2016-07-12 Andrea Electronics Corporation Steerable sensor array system with video input
US8555721B2 (en) * 2007-12-27 2013-10-15 Scott Taillet Sound measuring device
JP4981768B2 (ja) * 2008-08-19 2012-07-25 日本放送協会 背面雑音抑制マイクロホン
WO2010073212A2 (en) * 2008-12-24 2010-07-01 Nxp B.V. Method of, and apparatus for, planar audio tracking
US20150365762A1 (en) 2012-11-24 2015-12-17 Polycom, Inc. Acoustic perimeter for reducing noise transmitted by a communication device in an open-plan environment
CN105051814A (zh) 2013-03-12 2015-11-11 希尔Ip有限公司 降噪方法及系统
US9635457B2 (en) 2014-03-26 2017-04-25 Sennheiser Electronic Gmbh & Co. Kg Audio processing unit and method of processing an audio signal
US9937922B2 (en) * 2015-10-06 2018-04-10 Ford Global Technologies, Llc Collision avoidance using auditory data augmented with map data
US10097920B2 (en) * 2017-01-13 2018-10-09 Bose Corporation Capturing wide-band audio using microphone arrays and passive directional acoustic elements
CN110166890B (zh) * 2019-01-30 2022-05-31 腾讯科技（深圳）有限公司 音频的播放采集方法、设备及存储介质
CN115552920A (zh) 2020-05-08 2022-12-30 纽奥斯通讯有限公司 用于多麦克风信号处理的数据增强的系统和方法

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US4555598A (en) * 1983-09-21 1985-11-26 At&T Bell Laboratories Teleconferencing acoustic transducer
JPS62135020A (ja) * 1985-12-06 1987-06-18 Nec Corp 雑音消去装置
US5581495A (en) * 1994-09-23 1996-12-03 United States Of America Adaptive signal processing array with unconstrained pole-zero rejection of coherent and non-coherent interfering signals
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Also Published As

Publication number Publication date
US6084973A (en) 2000-07-04
NZ504915A (en) 2002-02-01
IL136578A (en) 2004-06-20
KR20010033367A (ko) 2001-04-25
NO20003222L (no) 2000-08-21
BR9814316A (pt) 2001-10-09
NO20003222D0 (no) 2000-06-21
CA2316378C (en) 2005-01-11
CN1290467A (zh) 2001-04-04
JP2001527370A (ja) 2001-12-25
CA2316378A1 (en) 1999-07-01
AU742120B2 (en) 2001-12-20
EP1057364A1 (en) 2000-12-06
AU2009599A (en) 1999-07-12
TW425827B (en) 2001-03-11
WO1999033324A1 (en) 1999-07-01
CN1160998C (zh) 2004-08-04
EP1057364A4 (en) 2007-02-21
IL136578A0 (en) 2001-06-14
PL344258A1 (en) 2001-10-22
EA002094B1 (ru) 2001-12-24

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KZ KG MD TJ TM RU