DE3374514D1 - Improvements in and relating to communications systems - Google Patents

Improvements in and relating to communications systems

Info

Publication number
DE3374514D1
DE3374514D1 DE8383300432T DE3374514T DE3374514D1 DE 3374514 D1 DE3374514 D1 DE 3374514D1 DE 8383300432 T DE8383300432 T DE 8383300432T DE 3374514 T DE3374514 T DE 3374514T DE 3374514 D1 DE3374514 D1 DE 3374514D1
Authority
DE
Germany
Prior art keywords
relating
communications systems
communications
systems
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.)
Expired
Application number
DE8383300432T
Other languages
English (en)
Inventor
Patrick Vincent France Clough
Natividade Albert Lobo
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.)
Racal Acoustics Ltd
Original Assignee
Racal Acoustics Ltd
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 Racal Acoustics Ltd filed Critical Racal Acoustics Ltd
Application granted granted Critical
Publication of DE3374514D1 publication Critical patent/DE3374514D1/de
Expired 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
    • 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
    • H04R2410/00—Microphones
    • H04R2410/05—Noise reduction with a separate noise microphone
DE8383300432T 1982-01-27 1983-01-27 Improvements in and relating to communications systems Expired DE3374514D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8202292 1982-01-27
GB8202291 1982-01-27

Publications (1)

Publication Number Publication Date
DE3374514D1 true DE3374514D1 (en) 1987-12-17

Family

ID=26281815

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383300432T Expired DE3374514D1 (en) 1982-01-27 1983-01-27 Improvements in and relating to communications systems

Country Status (4)

Country Link
US (1) US4672674A (de)
EP (1) EP0084982B1 (de)
DE (1) DE3374514D1 (de)
GB (1) GB2113952B (de)

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FR2635622A1 (fr) * 1988-08-19 1990-02-23 France Etat Dispositif de saisie de signaux sonores a elimination de brouilleur
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US5398286A (en) * 1991-01-11 1995-03-14 Booz-Allen & Hamilton, Inc. System for enhancing an analog signal
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JP3176474B2 (ja) * 1992-06-03 2001-06-18 沖電気工業株式会社 適応ノイズキャンセラ装置
US5715321A (en) * 1992-10-29 1998-02-03 Andrea Electronics Coporation Noise cancellation headset for use with stand or worn on ear
US5673325A (en) * 1992-10-29 1997-09-30 Andrea Electronics Corporation Noise cancellation apparatus
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US5381473A (en) * 1992-10-29 1995-01-10 Andrea Electronics Corporation Noise cancellation apparatus
US5625684A (en) * 1993-02-04 1997-04-29 Local Silence, Inc. Active noise suppression system for telephone handsets and method
US5434922A (en) * 1993-04-08 1995-07-18 Miller; Thomas E. Method and apparatus for dynamic sound optimization
DE4330243A1 (de) * 1993-09-07 1995-03-09 Philips Patentverwaltung Sprachverarbeitungseinrichtung
GB2286945A (en) * 1994-02-03 1995-08-30 Normalair Garrett Noise reduction system
DE9409320U1 (de) * 1994-06-08 1995-07-06 Berlin Florence Atemschutzmaske und Mikrofonhalter zur Verwendung darin
US5510743A (en) * 1994-07-14 1996-04-23 Panasonic Technologies, Inc. Apparatus and a method for restoring an A-level clipped signal
JP2758846B2 (ja) * 1995-02-27 1998-05-28 埼玉日本電気株式会社 ノイズキャンセラ装置
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
US6072881A (en) * 1996-07-08 2000-06-06 Chiefs Voice Incorporated Microphone noise rejection system
US6665707B1 (en) 1996-12-19 2003-12-16 International Business Machines Corporation Groupware environment that adaptively tailors open microphone sessions based on participant locality
US6151397A (en) * 1997-05-16 2000-11-21 Motorola, Inc. Method and system for reducing undesired signals in a communication environment
US6272360B1 (en) * 1997-07-03 2001-08-07 Pan Communications, Inc. Remotely installed transmitter and a hands-free two-way voice terminal device using same
US6430295B1 (en) * 1997-07-11 2002-08-06 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for measuring signal level and delay at multiple sensors
FI973455A (fi) * 1997-08-22 1999-02-23 Nokia Mobile Phones Ltd Menetelmä ja järjestely melun vaimentamiseksi tilassa muodostamalla vastamelua
US6278377B1 (en) 1999-08-25 2001-08-21 Donnelly Corporation Indicator for vehicle accessory
US6549586B2 (en) * 1999-04-12 2003-04-15 Telefonaktiebolaget L M Ericsson System and method for dual microphone signal noise reduction using spectral subtraction
US6584201B1 (en) * 1998-07-07 2003-06-24 Lucent Technologies Inc. Remote automatic volume control apparatus
US6980611B1 (en) * 1999-02-08 2005-12-27 Scientific Applications & Research Associates, Inc. System and method for measuring RF radiated emissions in the presence of strong ambient signals
US6363345B1 (en) 1999-02-18 2002-03-26 Andrea Electronics Corporation System, method and apparatus for cancelling noise
EP1081985A3 (de) * 1999-09-01 2006-03-22 Northrop Grumman Corporation Mikrofonanordnungsverarbeitungssystem für geräuschvolle Mehrwegumgebunge
US6594367B1 (en) 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
US7120261B1 (en) 1999-11-19 2006-10-10 Gentex Corporation Vehicle accessory microphone
US7447320B2 (en) * 2001-02-14 2008-11-04 Gentex Corporation Vehicle accessory microphone
US8682005B2 (en) * 1999-11-19 2014-03-25 Gentex Corporation Vehicle accessory microphone
ATE343915T1 (de) * 1999-12-09 2006-11-15 Azoteq Pty Ltd Sprachverteilungssystem
DE10018666A1 (de) 2000-04-14 2001-10-18 Harman Audio Electronic Sys Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
US20040125962A1 (en) * 2000-04-14 2004-07-01 Markus Christoph Method and apparatus for dynamic sound optimization
AU4323800A (en) 2000-05-06 2001-11-20 Nanyang Technological University System for noise suppression, transceiver and method for noise suppression
AU2001266910A1 (en) * 2000-06-14 2001-12-24 Sleep Solutions, Inc. Secure medical test and result delivery system
US6320968B1 (en) 2000-06-28 2001-11-20 Esion-Tech, Llc Adaptive noise rejection system and method
KR100394840B1 (ko) * 2000-11-30 2003-08-19 한국과학기술원 독립 성분 분석을 이용한 능동 잡음 제거방법
EP1380186B1 (de) * 2001-02-14 2015-08-26 Gentex Corporation Fahrzeug-zusatzmikrophon
US7751575B1 (en) * 2002-09-25 2010-07-06 Baumhauer Jr John C Microphone system for communication devices
US7496387B2 (en) * 2003-09-25 2009-02-24 Vocollect, Inc. Wireless headset for use in speech recognition environment
US20050071158A1 (en) * 2003-09-25 2005-03-31 Vocollect, Inc. Apparatus and method for detecting user speech
US20050182313A1 (en) * 2004-02-17 2005-08-18 Tucker Don M. Method and apparatus for noise extraction in measurements of electromagnetic activity in biological sources
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EP1833163B1 (de) * 2004-07-20 2019-12-18 Harman Becker Automotive Systems GmbH Audioverbesserungssystem und -verfahren
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
DE602005015426D1 (de) 2005-05-04 2009-08-27 Harman Becker Automotive Sys System und Verfahren zur Intensivierung von Audiosignalen
US8417185B2 (en) 2005-12-16 2013-04-09 Vocollect, Inc. Wireless headset and method for robust voice data communication
US7885419B2 (en) * 2006-02-06 2011-02-08 Vocollect, Inc. Headset terminal with speech functionality
US7773767B2 (en) * 2006-02-06 2010-08-10 Vocollect, Inc. Headset terminal with rear stability strap
US7991168B2 (en) * 2007-05-15 2011-08-02 Fortemedia, Inc. Serially connected microphones
US20090103744A1 (en) * 2007-10-23 2009-04-23 Gunnar Klinghult Noise cancellation circuit for electronic device
USD605629S1 (en) 2008-09-29 2009-12-08 Vocollect, Inc. Headset
US8229126B2 (en) * 2009-03-13 2012-07-24 Harris Corporation Noise error amplitude reduction
US8160287B2 (en) 2009-05-22 2012-04-17 Vocollect, Inc. Headset with adjustable headband
US8438659B2 (en) * 2009-11-05 2013-05-07 Vocollect, Inc. Portable computing device and headset interface
KR20130022549A (ko) * 2011-08-25 2013-03-07 삼성전자주식회사 마이크 노이즈 제거 방법 및 이를 지원하는 휴대 단말기
US9648421B2 (en) 2011-12-14 2017-05-09 Harris Corporation Systems and methods for matching gain levels of transducers
CN103369428A (zh) * 2013-06-12 2013-10-23 西安费斯达自动化工程有限公司 环境噪声背景差检测与估计方法

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US2309109A (en) * 1937-06-04 1943-01-26 Rca Corp Microphone
GB960374A (en) * 1959-09-16 1964-06-10 Wiggins Teape Res Dev Improvements in or relating to the manufacture of paper or other material
FR2087370A5 (de) * 1970-05-15 1971-12-31 Cit Alcatel
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US4066842A (en) * 1977-04-27 1978-01-03 Bell Telephone Laboratories, Incorporated Method and apparatus for cancelling room reverberation and noise pickup
US4334740A (en) * 1978-09-12 1982-06-15 Polaroid Corporation Receiving system having pre-selected directional response

Also Published As

Publication number Publication date
GB2113952B (en) 1985-07-24
EP0084982A3 (en) 1984-08-08
GB8302255D0 (en) 1983-03-02
EP0084982A2 (de) 1983-08-03
US4672674A (en) 1987-06-09
GB2113952A (en) 1983-08-10
EP0084982B1 (de) 1987-11-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition