FI963769A0 - Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon - Google Patents

Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon

Info

Publication number
FI963769A0
FI963769A0 FI963769A FI963769A FI963769A0 FI 963769 A0 FI963769 A0 FI 963769A0 FI 963769 A FI963769 A FI 963769A FI 963769 A FI963769 A FI 963769A FI 963769 A0 FI963769 A0 FI 963769A0
Authority
FI
Finland
Prior art keywords
pct
coefficients
adaptive filter
passage
acoustic echo
Prior art date
Application number
FI963769A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI963769A (fi
Inventor
Jerome Boudy
Francois Capman
Original Assignee
Matra Communication
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 Matra Communication filed Critical Matra Communication
Publication of FI963769A publication Critical patent/FI963769A/fi
Publication of FI963769A0 publication Critical patent/FI963769A0/fi

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)
  • Filters And Equalizers (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
FI963769A 1995-01-24 1996-09-23 Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon FI963769A0 (fi)

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
FI963769A FI963769A (fi) 1996-09-23
FI963769A0 true FI963769A0 (fi) 1996-09-23

Family

ID=9475429

Family Applications (1)

Application Number Title Priority Date Filing Date
FI963769A FI963769A0 (fi) 1995-01-24 1996-09-23 Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon

Country Status (12)

Country Link
US (1) US5848151A (es)
EP (1) EP0752181B1 (es)
CN (1) CN1145710A (es)
AT (1) ATE201120T1 (es)
AU (1) AU708388B2 (es)
BR (1) BR9603890A (es)
CA (1) CA2186281A1 (es)
DE (1) DE69612701T2 (es)
ES (1) ES2158276T3 (es)
FI (1) FI963769A0 (es)
FR (1) FR2729804B1 (es)
WO (1) WO1996023384A1 (es)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0843934B1 (en) * 1996-05-31 2007-11-14 Koninklijke Philips Electronics N.V. Arrangement for suppressing an interfering component of an input signal
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
US6970560B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for impairment diagnosis in communication systems
US7864692B1 (en) 1999-11-11 2011-01-04 Tokyo Electron Limited Method and apparatus for the prediction and optimization in impaired communication systems
US6834109B1 (en) 1999-11-11 2004-12-21 Tokyo Electron Limited Method and apparatus for mitigation of disturbers in communication systems
US6970415B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for characterization of disturbers in communication systems
AU1593501A (en) * 1999-11-11 2001-06-06 Voyan Technology Design and architecture of an impairment diagnosis system for use in communications 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
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
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
EP2153439B1 (en) * 2007-02-21 2018-01-17 Telefonaktiebolaget LM Ericsson (publ) Double talk detector
US8032365B2 (en) * 2007-08-31 2011-10-04 Tellabs Operations, Inc. Method and apparatus for 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
CN103222192B (zh) * 2010-10-08 2019-05-07 日本电气株式会社 信号处理设备和信号处理方法
CA2911078A1 (en) * 2013-05-02 2014-11-06 Bugatone Ltd. Earphone active noise control
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
EP0530423B1 (en) * 1991-09-06 1996-12-11 International Business Machines Corporation Adaptive echo cancellation method and device for implementing said method
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
AU708388B2 (en) 1999-08-05
BR9603890A (pt) 1997-10-07
CA2186281A1 (fr) 1996-08-01
ES2158276T3 (es) 2001-09-01
FR2729804B1 (fr) 1997-04-04
WO1996023384A1 (fr) 1996-08-01
ATE201120T1 (de) 2001-05-15
US5848151A (en) 1998-12-08
DE69612701D1 (de) 2001-06-13
FI963769A (fi) 1996-09-23
DE69612701T2 (de) 2002-04-18
FR2729804A1 (fr) 1996-07-26
AU4625396A (en) 1996-08-14
EP0752181A1 (fr) 1997-01-08
CN1145710A (zh) 1997-03-19
EP0752181B1 (fr) 2001-05-09

Similar Documents

Publication Publication Date Title
FI963769A0 (fi) Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon
US7684559B2 (en) Acoustic echo suppressor for hands-free speech communication
FI863169A0 (fi) Fullstaendigt dubbelriktad hoegtalartelefon foer radio- och kabeltelefonsystem.
KR100378449B1 (ko) 개선된에코제거기를갖는신호증폭기시스템
BR9506958A (pt) Anulador de eco acústico com filtragem em subfaixas
CA2183118A1 (en) Subband Acoustic Echo Canceller
FI971664A0 (fi) Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin
WO1997023068A3 (en) An adaptive noise cancelling arrangement, a noise reduction system and a transceiver
ITMI920398A1 (it) Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici non stazionari
EP0739102A3 (en) Subband echo cancellation method using projection algorithm
KR960027855A (ko) 데이타 통신 장치 및 그 장치에 이용하기 위한 방법
ES8202211A1 (es) Un dispositivo para convertir una senal electrica en una se-nal acustica
EP1210814B1 (en) Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
US5970154A (en) Apparatus and method for echo cancellation
NO940767D0 (no) Fremgangsmåte for interferensdempning ved overföring og/eller lagring av akustiske eller optiske signaler
MY117594A (en) Echo removing apparatus
FR2546693B1 (fr) Annuleur d'echo a filtre numerique adaptatif pour systeme de transmission
DE69232501D1 (de) Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter
TW338867B (en) Echo elimination method and equipment by the audition effect
AU7068596A (en) Echo cancellation method and circuit
SE9804505D0 (sv) Echo and distortion cancellation arrangement