DE69628618D1 - Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos - Google Patents

Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos

Info

Publication number
DE69628618D1
DE69628618D1 DE69628618T DE69628618T DE69628618D1 DE 69628618 D1 DE69628618 D1 DE 69628618D1 DE 69628618 T DE69628618 T DE 69628618T DE 69628618 T DE69628618 T DE 69628618T DE 69628618 D1 DE69628618 D1 DE 69628618D1
Authority
DE
Germany
Prior art keywords
acoustic echo
channel compensation
compensation
channel
echo
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 - Fee Related
Application number
DE69628618T
Other languages
English (en)
Other versions
DE69628618T2 (de
Inventor
Suehiro Shimauchi
Shoji Makino
Junji Kojima
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of DE69628618D1 publication Critical patent/DE69628618D1/de
Application granted granted Critical
Publication of DE69628618T2 publication Critical patent/DE69628618T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE69628618T 1995-09-26 1996-09-25 Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos Expired - Fee Related DE69628618T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP24772495 1995-09-26
JP24772495 1995-09-26
JP6470896 1996-03-21
JP6470896 1996-03-21

Publications (2)

Publication Number Publication Date
DE69628618D1 true DE69628618D1 (de) 2003-07-17
DE69628618T2 DE69628618T2 (de) 2004-05-13

Family

ID=26405817

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69628618T Expired - Fee Related DE69628618T2 (de) 1995-09-26 1996-09-25 Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos

Country Status (4)

Country Link
US (1) US5761318A (de)
EP (1) EP0766446B1 (de)
CA (1) CA2186416C (de)
DE (1) DE69628618T2 (de)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3654470B2 (ja) * 1996-09-13 2005-06-02 日本電信電話株式会社 サブバンド多チャネル音声通信会議用反響消去方法
FR2763774B1 (fr) * 1997-05-21 1999-08-06 France Telecom Procede et dispositif de reduction d'echo acoustique multivoies et de spatialisation sonore
WO1999038324A1 (en) * 1998-01-27 1999-07-29 Collaboration Properties, Inc. Multifunction video communication service device
DE69908463T2 (de) * 1998-03-05 2004-05-13 Nippon Telegraph And Telephone Corp. Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
JP4166435B2 (ja) * 1998-04-08 2008-10-15 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 通信会議システム
US6785391B1 (en) * 1998-05-22 2004-08-31 Nippon Telegraph And Telephone Corporation Apparatus and method for simultaneous estimation of transfer characteristics of multiple linear transmission paths
JP3319403B2 (ja) * 1998-09-02 2002-09-03 日本電気株式会社 多チャネルエコー除去方法及び装置
US6473409B1 (en) * 1999-02-26 2002-10-29 Microsoft Corp. Adaptive filtering system and method for adaptively canceling echoes and reducing noise in digital signals
CA2373114C (en) * 1999-05-25 2007-03-27 British Telecommunications Public Limited Company Acoustic echo cancellation
US6757385B1 (en) 1999-06-04 2004-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Symmetry based subband acoustic echo cancellation
US6694020B1 (en) * 1999-09-14 2004-02-17 Agere Systems, Inc. Frequency domain stereophonic acoustic echo canceller utilizing non-linear transformations
FR2805433A1 (fr) * 2000-02-17 2001-08-24 France Telecom Procede et dispositif de comparaison de signaux pour le controle de transducteurs et systeme de controle de transducteurs
JP4568439B2 (ja) * 2001-01-22 2010-10-27 パナソニック株式会社 エコー抑圧装置
US6792107B2 (en) * 2001-01-26 2004-09-14 Lucent Technologies Inc. Double-talk detector suitable for a telephone-enabled PC
FR2824982B1 (fr) * 2001-05-16 2003-07-04 France Telecom Procede de controle adaptatif de systeme d'annulation d'echo multivoies et dispositif pour mettre en oeuvre le procede
JP3506138B2 (ja) 2001-07-11 2004-03-15 ヤマハ株式会社 複数チャンネルエコーキャンセル方法、複数チャンネル音声伝送方法、ステレオエコーキャンセラ、ステレオ音声伝送装置および伝達関数演算装置
EP1472905A2 (de) * 2002-01-17 2004-11-03 Koninklijke Philips Electronics N.V. Vielkanal-echokompensator mit aktiver audiomatrixkoeffizienten
DE10362073A1 (de) * 2003-11-06 2005-11-24 Herbert Buchner Vorrichtung und Verfahren zum Verarbeiten eines Eingangssignals
JP4630956B2 (ja) * 2004-03-30 2011-02-09 学校法人早稲田大学 ハウリング周波数成分強調方法およびその装置、ハウリング検出方法およびその装置、ハウリング抑圧方法およびその装置、ピーク周波数成分強調方法およびその装置
US20060147063A1 (en) * 2004-12-22 2006-07-06 Broadcom Corporation Echo cancellation in telephones with multiple microphones
US20060133621A1 (en) * 2004-12-22 2006-06-22 Broadcom Corporation Wireless telephone having multiple microphones
US20070116300A1 (en) * 2004-12-22 2007-05-24 Broadcom Corporation Channel decoding for wireless telephones with multiple microphones and multiple description transmission
US8509703B2 (en) * 2004-12-22 2013-08-13 Broadcom Corporation Wireless telephone with multiple microphones and multiple description transmission
US7983720B2 (en) * 2004-12-22 2011-07-19 Broadcom Corporation Wireless telephone with adaptive microphone array
US7844059B2 (en) * 2005-03-16 2010-11-30 Microsoft Corporation Dereverberation of multi-channel audio streams
US20070033030A1 (en) * 2005-07-19 2007-02-08 Oded Gottesman Techniques for measurement, adaptation, and setup of an audio communication system
JP4348393B2 (ja) * 2006-02-16 2009-10-21 日本電信電話株式会社 信号歪み除去装置、方法、プログラム及びそのプログラムを記録した記録媒体
WO2007100137A1 (ja) * 2006-03-03 2007-09-07 Nippon Telegraph And Telephone Corporation 残響除去装置、残響除去方法、残響除去プログラム及び記録媒体
JP2008005293A (ja) * 2006-06-23 2008-01-10 Matsushita Electric Ind Co Ltd エコー抑圧装置
US8189765B2 (en) * 2006-07-06 2012-05-29 Panasonic Corporation Multichannel echo canceller
FR2908004B1 (fr) * 2006-10-26 2008-12-12 Parrot Sa Circuit de reduction de l'echo acoustique pour un dispositif "mains libres"utilisable avec un telephone portable
FR2908005B1 (fr) * 2006-10-26 2009-04-03 Parrot Sa Circuit de reduction de l'echo acoustique pour un dispositif "mains libres"utilisable avec un telephone portable
FR2908003B1 (fr) * 2006-10-26 2009-04-03 Parrot Sa Procede de reduction de l'echo acoustique residuel apres supression d'echo dans un dispositif"mains libres"
US8223959B2 (en) * 2007-07-31 2012-07-17 Hewlett-Packard Development Company, L.P. Echo cancellation in which sound source signals are spatially distributed to all speaker devices
US8428661B2 (en) * 2007-10-30 2013-04-23 Broadcom Corporation Speech intelligibility in telephones with multiple microphones
JP5130895B2 (ja) * 2007-12-13 2013-01-30 ソニー株式会社 音声処理装置、音声処理システム、音声処理プログラム及び音声処理方法
US8125559B2 (en) 2008-05-25 2012-02-28 Avistar Communications Corporation Image formation for large photosensor array surfaces
JP5451876B2 (ja) * 2009-06-02 2014-03-26 コーニンクレッカ フィリップス エヌ ヴェ 音響マルチチャネル相殺
JP5550456B2 (ja) * 2009-06-04 2014-07-16 本田技研工業株式会社 残響抑圧装置、及び残響抑圧方法
US9160864B2 (en) * 2011-01-05 2015-10-13 Conexant Systems, Inc. Systems and methods for stereo echo cancellation
FR2976111B1 (fr) * 2011-06-01 2013-07-05 Parrot Equipement audio comprenant des moyens de debruitage d'un signal de parole par filtrage a delai fractionnaire, notamment pour un systeme de telephonie "mains libres"
CN103533193B (zh) * 2012-07-04 2016-07-06 中兴通讯股份有限公司 残留回波消除方法及装置
CN103888630A (zh) 2012-12-20 2014-06-25 杜比实验室特许公司 用于控制声学回声消除的方法和音频处理装置
US9712866B2 (en) 2015-04-16 2017-07-18 Comigo Ltd. Cancelling TV audio disturbance by set-top boxes in conferences
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US9653060B1 (en) * 2016-02-09 2017-05-16 Amazon Technologies, Inc. Hybrid reference signal for acoustic echo cancellation
US9659555B1 (en) * 2016-02-09 2017-05-23 Amazon Technologies, Inc. Multichannel acoustic echo cancellation
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
US10522167B1 (en) * 2018-02-13 2019-12-31 Amazon Techonlogies, Inc. Multichannel noise cancellation using deep neural network masking
CN112335261B (zh) 2018-06-01 2023-07-18 舒尔获得控股公司 图案形成麦克风阵列
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
US11310596B2 (en) 2018-09-20 2022-04-19 Shure Acquisition Holdings, Inc. Adjustable lobe shape for array microphones
WO2020191354A1 (en) 2019-03-21 2020-09-24 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
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
JP2022526761A (ja) 2019-03-21 2022-05-26 シュアー アクイジッション ホールディングス インコーポレイテッド 阻止機能を伴うビーム形成マイクロフォンローブの自動集束、領域内自動集束、および自動配置
CN114051738A (zh) 2019-05-23 2022-02-15 舒尔获得控股公司 可操纵扬声器阵列、系统及其方法
TW202105369A (zh) 2019-05-31 2021-02-01 美商舒爾獲得控股公司 整合語音及雜訊活動偵測之低延時自動混波器
US11297426B2 (en) 2019-08-23 2022-04-05 Shure Acquisition Holdings, Inc. One-dimensional array microphone with improved directivity
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
USD944776S1 (en) 2020-05-05 2022-03-01 Shure Acquisition Holdings, Inc. Audio device
WO2021243368A2 (en) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Transducer steering and configuration systems and methods using a local positioning system
CN116918351A (zh) 2021-01-28 2023-10-20 舒尔获得控股公司 混合音频波束成形系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123621A (ja) * 1990-09-14 1992-04-23 Nippon Telegr & Teleph Corp <Ntt> 反響消去装置
JP2792252B2 (ja) * 1991-03-14 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
JP2792311B2 (ja) * 1992-01-31 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
JP2654894B2 (ja) * 1992-09-30 1997-09-17 日本電信電話株式会社 反響消去装置およびその方法
JP2508574B2 (ja) * 1992-11-10 1996-06-19 日本電気株式会社 多チャンネルエコ―除去装置
JPH084243B2 (ja) * 1993-05-31 1996-01-17 日本電気株式会社 多チャンネルエコー除去方法および装置
US5602765A (en) * 1993-07-27 1997-02-11 Nippon Telegraph And Telephone Corporation Adaptive transfer function estimating method and estimating device using the same
DE69532394T2 (de) * 1994-02-10 2004-11-04 Nippon Telegraph And Telephone Corp. Verfahren und Vorrichtung zur Echokompensation mit Anwendung der "fast projection scheme"
JP3397269B2 (ja) * 1994-10-26 2003-04-14 日本電信電話株式会社 多チャネル反響消去方法

Also Published As

Publication number Publication date
EP0766446A3 (de) 1997-12-29
CA2186416A1 (en) 1997-03-27
EP0766446A2 (de) 1997-04-02
EP0766446B1 (de) 2003-06-11
US5761318A (en) 1998-06-02
DE69628618T2 (de) 2004-05-13
CA2186416C (en) 2000-04-18

Similar Documents

Publication Publication Date Title
DE69628618D1 (de) Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
DE69531136D1 (de) Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
DE69827911D1 (de) Verfahren und einrichtung zur mehrkanaligen kompensation eines akustischen echos
DE69908463D1 (de) Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
DE69633458D1 (de) Verfahren und gerät zur echounterdrückung unter verwendung der leistungsschätzung des restsignals
DE69329416D1 (de) Gerät und Verfahren zur Elastizitätsmessung einer Arterie mittels Ultraschall-Echographie
DE69613175D1 (de) Verfahren und Gerät zur linearen Echtzeitschätzung eines Flugzeugmassenmittelpunktes
DE69520067T2 (de) Verfahren und Einrichtung zur Kennzeichnung eines Eingangssignales
DE69327501D1 (de) Schallumgebungsimulator und Verfahren zur Schallfeldanalyse
DE69634841D1 (de) Verfahren und Vorrichtung zur Echokompensation
DE59604158D1 (de) Verfahren zur Qualitätskontrolle eines portablen Analysensystems
DE10085355T1 (de) Vorrichtung zur akustischen Verbesserung einer Umgebung und diesbezügliches Verfahren
DE4498744T1 (de) Gerät und Verfahren zur Frequenzkompensation eines Operationsverstärkers
DE69628411D1 (de) Vorrichtung und Verfahren zur Geräuschreduzierung eines Sprachsignals
DE69623188D1 (de) Verfahren und Einrichtung zur Frequenzspektrumbestimmung eines Signals
DE69512540T2 (de) Verfahren und Einrichtung zur Analyse eines Echosignals und adaptiver Echokompensator welcher diese anwendet
DE69612958D1 (de) Verfahren und vorrichtung zur resynthetisierung eines sprachsignals
DE69807806T2 (de) Verfahren und vorrichtung zur kodierung eines audiosignals mittels &#34;vorwärts&#34;- und &#34;rückwärts&#34;-lpc-analyse
DE69521622T2 (de) System und verfahren zur sprachverarbeitung mittels multipuls-analyse
DE69535372D1 (de) Verfahren zur Herstellung eines elektroakustischen Wandlers
DE69906569D1 (de) Verfahren und vorrichtung zur spracherkennung eines mit störungen behafteten akustischen signals
DE59601910D1 (de) Verfahren zur kompression eines analogen signals
DE69226186T2 (de) Verfahren und system zur prüfung kapazitiver akustischer wandler
DE69705647D1 (de) Verfahren zur Prüfung einer akustische Wandleranordnungantenne
DE69325481T2 (de) Verfahren und Apparat zur Verbesserung der Breitbanddetektion eines Tones

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee