DE69433000T2 - Mehrkanal-Echokompensationsverfahren und Vorrichtung dafür - Google Patents

Mehrkanal-Echokompensationsverfahren und Vorrichtung dafür Download PDF

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Publication number
DE69433000T2
DE69433000T2 DE69433000T DE69433000T DE69433000T2 DE 69433000 T2 DE69433000 T2 DE 69433000T2 DE 69433000 T DE69433000 T DE 69433000T DE 69433000 T DE69433000 T DE 69433000T DE 69433000 T2 DE69433000 T2 DE 69433000T2
Authority
DE
Germany
Prior art keywords
echo cancellation
device therefor
cancellation method
channel echo
channel
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
DE69433000T
Other languages
English (en)
Other versions
DE69433000D1 (de
Inventor
Akihiro Hirano
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of DE69433000D1 publication Critical patent/DE69433000D1/de
Application granted granted Critical
Publication of DE69433000T2 publication Critical patent/DE69433000T2/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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3012—Algorithms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/50—Miscellaneous
    • G10K2210/505—Echo cancellation, e.g. multipath-, ghost- or reverberation-cancellation
DE69433000T 1993-05-31 1994-05-30 Mehrkanal-Echokompensationsverfahren und Vorrichtung dafür Expired - Fee Related DE69433000T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5167261A JPH084243B2 (ja) 1993-05-31 1993-05-31 多チャンネルエコー除去方法および装置

Publications (2)

Publication Number Publication Date
DE69433000D1 DE69433000D1 (de) 2003-09-11
DE69433000T2 true DE69433000T2 (de) 2004-01-29

Family

ID=15846462

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69433000T Expired - Fee Related DE69433000T2 (de) 1993-05-31 1994-05-30 Mehrkanal-Echokompensationsverfahren und Vorrichtung dafür

Country Status (5)

Country Link
US (1) US5513265A (de)
EP (1) EP0627825B1 (de)
JP (1) JPH084243B2 (de)
CA (1) CA2124662C (de)
DE (1) DE69433000T2 (de)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5602928A (en) * 1995-01-05 1997-02-11 Digisonix, Inc. Multi-channel communication system
DE19517469A1 (de) * 1995-05-12 1996-11-14 Sel Alcatel Ag Freisprechverfahren für ein mehrkanaliges Übertragungssystem
DE69628618T2 (de) * 1995-09-26 2004-05-13 Nippon Telegraph And Telephone Corp. Verfahren und Einrichtung zur mehrkanaligen Kompensation eines akustischen Echos
FR2739736B1 (fr) * 1995-10-05 1997-12-05 Jean Laroche Procede de reduction des pre-echos ou post-echos affectant des enregistrements audio
US5923749A (en) * 1995-12-06 1999-07-13 Telefonaktiebolaget Lm Ericsson Method and system for eliminating acoustic echos in a digital telecommunication system
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
JPH09266456A (ja) * 1996-03-28 1997-10-07 Mitsubishi Electric Corp エコーキャンセラ
TW432855B (en) * 1996-04-25 2001-05-01 Mitsubishi Electric Corp Echo eliminator
US5796819A (en) * 1996-07-24 1998-08-18 Ericsson Inc. Echo canceller for non-linear circuits
JP2950260B2 (ja) * 1996-11-22 1999-09-20 日本電気株式会社 雑音抑圧送話装置
JP3175622B2 (ja) * 1997-03-03 2001-06-11 ヤマハ株式会社 演奏音場制御装置
FR2762467B1 (fr) 1997-04-16 1999-07-02 France Telecom Procede d'annulation d'echo acoustique multi-voies et annuleur d'echo acoustique multi-voies
US6430295B1 (en) 1997-07-11 2002-08-06 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for measuring signal level and delay at multiple sensors
SE512903C2 (sv) * 1997-10-29 2000-06-05 Telia Ab Metod och anordning vid stereoakustisk ekosläckning
US6023514A (en) * 1997-12-22 2000-02-08 Strandberg; Malcolm W. P. System and method for factoring a merged wave field into independent components
DE19801389A1 (de) * 1998-01-16 1999-07-22 Cit Alcatel Verfahren zur Echounterdrückung mit adaptiven FIR-Filtern
DE19801390A1 (de) 1998-01-16 1999-07-22 Cit Alcatel Einrichtung und Verfahren zur Echounterdrückung mit adaptiven FIR-Filtern
DE19815942A1 (de) 1998-04-09 1999-10-14 Cit Alcatel Vielkanal-Echocanceller mit Compander
WO2001043490A2 (en) * 1999-12-09 2001-06-14 Frederick Johannes Bruwer Speech distribution system
JP2002009675A (ja) * 2000-06-26 2002-01-11 Nec Corp 多重化回線用エコー除去方法及び装置
JP3972921B2 (ja) * 2004-05-11 2007-09-05 ソニー株式会社 音声集音装置とエコーキャンセル処理方法
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
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
EP3779962A4 (de) * 2018-04-09 2021-06-09 Sony Corporation Signalverarbeitungsvorrichtung, signalverarbeitungsverfahren und signalverarbeitungsprogramm
EP3804356A1 (de) 2018-06-01 2021-04-14 Shure Acquisition Holdings, Inc. Musterbildende mikrofonanordnung
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
EP3854108A1 (de) 2018-09-20 2021-07-28 Shure Acquisition Holdings, Inc. Einstellbare nockenform für arraymikrofone
EP3667662B1 (de) * 2018-12-12 2022-08-10 Panasonic Intellectual Property Corporation of America Vorrichtung zur unterdrückung von akustischem echo, verfahren zur unterdrückung von akustischem echo und programm zur unterdrückung von akustischem echo
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
CN113841419A (zh) 2019-03-21 2021-12-24 舒尔获得控股公司 天花板阵列麦克风的外壳及相关联设计特征
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
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
CN114051637A (zh) 2019-05-31 2022-02-15 舒尔获得控股公司 集成语音及噪声活动检测的低延时自动混波器
JP2022545113A (ja) 2019-08-23 2022-10-25 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 指向性が改善された一次元アレイマイクロホン
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
US11785380B2 (en) 2021-01-28 2023-10-10 Shure Acquisition Holdings, Inc. Hybrid audio beamforming system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412728A (en) * 1987-07-07 1989-01-17 Fujitsu Ltd Echo canceller
US5305309A (en) * 1989-12-06 1994-04-19 Fujitsu Limited Echo canceller
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
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

Also Published As

Publication number Publication date
JPH084243B2 (ja) 1996-01-17
CA2124662C (en) 1999-03-23
JPH06343051A (ja) 1994-12-13
EP0627825B1 (de) 2003-08-06
US5513265A (en) 1996-04-30
EP0627825A2 (de) 1994-12-07
DE69433000D1 (de) 2003-09-11
CA2124662A1 (en) 1994-12-01
EP0627825A3 (de) 1998-04-01

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Legal Events

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