BR9814316A - Microfone direcional - Google Patents

Microfone direcional

Info

Publication number
BR9814316A
BR9814316A BR9814316-6A BR9814316A BR9814316A BR 9814316 A BR9814316 A BR 9814316A BR 9814316 A BR9814316 A BR 9814316A BR 9814316 A BR9814316 A BR 9814316A
Authority
BR
Brazil
Prior art keywords
microphone
directional microphone
shotgun
signals
signal
Prior art date
Application number
BR9814316-6A
Other languages
English (en)
Inventor
Jacquelynn Green
Robert T Green
Lll
Tadashi Kikutani
Original Assignee
Audio Technica Us
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 Audio Technica Us filed Critical Audio Technica Us
Publication of BR9814316A publication Critical patent/BR9814316A/pt

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

"MICROFONE DIRECIONAL". Um microfone direcional compreende um microfone do tipo de espingarda (16) tendo um tubo alongado que é projetado para controlar o direcionamento em frequências acima de uma freq³ência predeterminada e pelo menos quatro microfones de referência (20, 22, 24, 26) arranjados espacialmente em torno do dito microfone do tipo de espingarda (16). Um processador de sinal (50), o qual é eletricamente conectado aos microfones do tipo de espingarda e de referência, gera sinais de cancelamento de interferência (de 96) desde as porções dos sinais dos microfones de referência (20, 22, 24, 26) que têm frequências geralmente abaixo da frequência predeterminada. O processador de sinal (50) combina os sinais de cancelamento com o sinal do microfone do tipo de espingarda (16) para gerar um sinal de saída (100), no qual são melhorados sinais que se originam à frente do microfone direcional em uma direção ao longo do eixo longitudinal do tubo, e são suprimidos sinais que se originam de locais diferentes do que à frente do microfone direcional em uma direção ao longo do eixo longitudinal do tubo alongado.
BR9814316-6A 1997-12-22 1998-12-21 Microfone direcional BR9814316A (pt)

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 (1)

Publication Number Publication Date
BR9814316A true BR9814316A (pt) 2001-10-09

Family

ID=25542128

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9814316-6A BR9814316A (pt) 1997-12-22 1998-12-21 Microfone direcional

Country Status (15)

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

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US7333622B2 (en) * 2002-10-18 2008-02-19 The Regents Of The University Of California Dynamic binaural sound capture and reproduction
US20070009120A1 (en) * 2002-10-18 2007-01-11 Algazi V R Dynamic binaural sound capture and reproduction in focused or frontal applications
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
US8824699B2 (en) * 2008-12-24 2014-09-02 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
JP2016515342A (ja) 2013-03-12 2016-05-26 ヒア アイピー ピーティーワイ リミテッド ノイズ低減法、およびシステム
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
EP4147458A4 (en) 2020-05-08 2024-04-03 Microsoft Technology Licensing Llc SYSTEM AND METHOD FOR DATA AMPLIFICATION FOR MULTI-MICROPHONE SIGNAL PROCESSING

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
KR19980702171A (ko) * 1995-12-15 1998-07-15 요트. 게. 아. 롤페즈 적응잡음 제거장치, 잡음감소 시스템과 트랜시버
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
US5825898A (en) * 1996-06-27 1998-10-20 Lamar Signal Processing Ltd. System and method for adaptive interference cancelling
CN1260087A (zh) * 1997-04-14 2000-07-12 拉马信号处理有限公司 双重处理干扰消除系统和方法

Also Published As

Publication number Publication date
PL344258A1 (en) 2001-10-22
AU2009599A (en) 1999-07-12
IL136578A0 (en) 2001-06-14
IL136578A (en) 2004-06-20
EP1057364A4 (en) 2007-02-21
CN1290467A (zh) 2001-04-04
NZ504915A (en) 2002-02-01
AU742120B2 (en) 2001-12-20
JP2001527370A (ja) 2001-12-25
KR20010033367A (ko) 2001-04-25
EA002094B1 (ru) 2001-12-24
TW425827B (en) 2001-03-11
WO1999033324A1 (en) 1999-07-01
US6084973A (en) 2000-07-04
CA2316378C (en) 2005-01-11
CN1160998C (zh) 2004-08-04
NO20003222L (no) 2000-08-21
CA2316378A1 (en) 1999-07-01
EA200000690A1 (ru) 2000-12-25
NO20003222D0 (no) 2000-06-21
EP1057364A1 (en) 2000-12-06

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A E 10A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO 1976 DE 18/11/2008.