DE69612701T2 - Echokompensation mit adaptivem filter im frequenzbereich - Google Patents

Echokompensation mit adaptivem filter im frequenzbereich

Info

Publication number
DE69612701T2
DE69612701T2 DE69612701T DE69612701T DE69612701T2 DE 69612701 T2 DE69612701 T2 DE 69612701T2 DE 69612701 T DE69612701 T DE 69612701T DE 69612701 T DE69612701 T DE 69612701T DE 69612701 T2 DE69612701 T2 DE 69612701T2
Authority
DE
Germany
Prior art keywords
pct
coefficients
adaptive filter
sec
output signal
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
DE69612701T
Other languages
English (en)
Other versions
DE69612701D1 (de
Inventor
Jerome Boudy
Francois Capman
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.)
EADS Defence and Security Networks SAS
Nortel Networks France SAS
Original Assignee
EADS Defence and Security Networks SAS
Matra Nortel Communications SAS
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 EADS Defence and Security Networks SAS, Matra Nortel Communications SAS filed Critical EADS Defence and Security Networks SAS
Publication of DE69612701D1 publication Critical patent/DE69612701D1/de
Application granted granted Critical
Publication of DE69612701T2 publication Critical patent/DE69612701T2/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)
  • Filters That Use Time-Delay Elements (AREA)
  • Networks Using Active Elements (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Filters And Equalizers (AREA)
  • Telephone Function (AREA)
DE69612701T 1995-01-24 1996-01-22 Echokompensation mit adaptivem filter im frequenzbereich Expired - Fee Related DE69612701T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9500777A FR2729804B1 (fr) 1995-01-24 1995-01-24 Annuleur d'echo acoustique a filtre adaptatif et passage dans le domaine frequentiel
PCT/FR1996/000100 WO1996023384A1 (fr) 1995-01-24 1996-01-22 Annuleur d'echo acoustique a filtre adaptatif et passage dans le domaine frequentiel

Publications (2)

Publication Number Publication Date
DE69612701D1 DE69612701D1 (de) 2001-06-13
DE69612701T2 true DE69612701T2 (de) 2002-04-18

Family

ID=9475429

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69612701T Expired - Fee Related DE69612701T2 (de) 1995-01-24 1996-01-22 Echokompensation mit adaptivem filter im frequenzbereich

Country Status (12)

Country Link
US (1) US5848151A (de)
EP (1) EP0752181B1 (de)
CN (1) CN1145710A (de)
AT (1) ATE201120T1 (de)
AU (1) AU708388B2 (de)
BR (1) BR9603890A (de)
CA (1) CA2186281A1 (de)
DE (1) DE69612701T2 (de)
ES (1) ES2158276T3 (de)
FI (1) FI963769A (de)
FR (1) FR2729804B1 (de)
WO (1) WO1996023384A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4104659B2 (ja) * 1996-05-31 2008-06-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 入力信号の妨害成分を抑圧するための装置
FR2758677B1 (fr) * 1997-01-21 1999-04-02 Matra Communication Procede d'annulation d'echo et annuleur d'echo mettant en oeuvre un tel procede
SG77611A1 (en) * 1997-11-13 2001-01-16 Univ Singapore Acoustic echo cancellation equipped with howling suppressor and double-talk detector
US6091813A (en) * 1998-06-23 2000-07-18 Noise Cancellation Technologies, Inc. Acoustic echo canceller
JP2000032069A (ja) * 1998-07-08 2000-01-28 Nec Corp パケット構成方法及びパケット受信器
DE19850272A1 (de) * 1998-10-31 2000-05-04 Alcatel Sa Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem
US6269161B1 (en) * 1999-05-20 2001-07-31 Signalworks, Inc. System and method for near-end talker detection by spectrum analysis
GB2352948B (en) * 1999-07-13 2004-03-31 Racal Recorders Ltd Voice activity monitoring apparatus and methods
US6665645B1 (en) * 1999-07-28 2003-12-16 Matsushita Electric Industrial Co., Ltd. Speech recognition apparatus for AV equipment
US6834109B1 (en) 1999-11-11 2004-12-21 Tokyo Electron Limited Method and apparatus for mitigation of disturbers in communication systems
US6978015B1 (en) 1999-11-11 2005-12-20 Tokyo Electron Limited Method and apparatus for cooperative diagnosis of impairments and mitigation of disturbers in communication systems
WO2001035607A1 (en) * 1999-11-11 2001-05-17 Voyan Technology Design and architecture of an impairment diagnosis system for use in communications systems
US6970560B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for impairment diagnosis in communication systems
US6970415B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for characterization of disturbers in communication systems
US6870901B1 (en) 1999-11-11 2005-03-22 Tokyo Electron Limited Design and architecture of an impairment diagnosis system for use in communications systems
US7864692B1 (en) 1999-11-11 2011-01-04 Tokyo Electron Limited Method and apparatus for the prediction and optimization in impaired communication systems
US6959167B1 (en) * 2000-08-11 2005-10-25 Scansoft, Inc. Noise-level adaptive residual echo suppressor
US20080162119A1 (en) * 2007-01-03 2008-07-03 Lenhardt Martin L Discourse Non-Speech Sound Identification and Elimination
CN101617363B (zh) * 2007-02-21 2012-09-05 艾利森电话股份有限公司 双端话音检测器
WO2009029076A1 (en) * 2007-08-31 2009-03-05 Tellabs Operations, Inc. Controlling echo in the coded domain
US8451921B2 (en) * 2009-10-28 2013-05-28 Qualcomm Incorporated Method and an apparatus for adaptively learning a sparse impulse response of a continuous channel
US9805734B2 (en) * 2010-10-08 2017-10-31 Nec Corporation Signal processing device, signal processing method and signal processing program for noise cancellation
KR102045600B1 (ko) * 2013-05-02 2019-11-15 부가톤 엘티디. 이어폰 능동 노이즈 제어
JP6151213B2 (ja) * 2014-04-25 2017-06-21 日本電信電話株式会社 反響消去装置、反響消去方法、プログラム
US10102613B2 (en) * 2014-09-25 2018-10-16 Google Llc Frequency-domain denoising

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897878A (en) * 1985-08-26 1990-01-30 Itt Corporation Noise compensation in speech recognition apparatus
NL8701633A (nl) * 1987-07-10 1989-02-01 Philips Nv Digitale echocompensator.
US5148489A (en) * 1990-02-28 1992-09-15 Sri International Method for spectral estimation to improve noise robustness for speech recognition
US5274739A (en) * 1990-05-22 1993-12-28 Rockwell International Corporation Product code memory Itakura-Saito (MIS) measure for sound recognition
JP2626223B2 (ja) * 1990-09-26 1997-07-02 日本電気株式会社 音声符号化装置
DE69123579T2 (de) * 1991-09-06 1997-06-12 Ibm Verfahren zur adaptiven Echokompensation und Einrichtung zur Durchführung des Verfahrens
FR2681715B1 (fr) * 1991-09-25 1994-02-11 Matra Communication Procede de traitement de la parole en presence de bruits acoustiques: procede de soustraction spectrale non lineaire .
JPH06216811A (ja) * 1993-01-20 1994-08-05 Toshiba Corp エコーキャンセラを備えた音声通信装置
US5475731A (en) * 1994-01-07 1995-12-12 Ericsson Inc. Echo-canceling system and method using echo estimate to modify error signal
FR2715784B1 (fr) * 1994-02-02 1996-03-29 Jacques Prado Procédé et dispositif d'analyse d'un signal de retour et annuleur d'écho adaptatif en comportant application.
FR2726392B1 (fr) * 1994-10-28 1997-01-10 Alcatel Mobile Comm France Procede et dispositif de suppression de bruit dans un signal de parole, et systeme avec annulation d'echo correspondant
US5526426A (en) * 1994-11-08 1996-06-11 Signalworks System and method for an efficiently constrained frequency-domain adaptive filter
US5657384A (en) * 1995-03-10 1997-08-12 Tandy Corporation Full duplex speakerphone
JP3359460B2 (ja) * 1995-03-20 2002-12-24 沖電気工業株式会社 適応フィルタ及びエコーキャンセラ

Also Published As

Publication number Publication date
DE69612701D1 (de) 2001-06-13
WO1996023384A1 (fr) 1996-08-01
FR2729804A1 (fr) 1996-07-26
EP0752181B1 (de) 2001-05-09
FI963769A0 (fi) 1996-09-23
ATE201120T1 (de) 2001-05-15
ES2158276T3 (es) 2001-09-01
BR9603890A (pt) 1997-10-07
CN1145710A (zh) 1997-03-19
AU708388B2 (en) 1999-08-05
US5848151A (en) 1998-12-08
FI963769A (fi) 1996-09-23
EP0752181A1 (de) 1997-01-08
CA2186281A1 (fr) 1996-08-01
AU4625396A (en) 1996-08-14
FR2729804B1 (fr) 1997-04-04

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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