DE69631708D1 - Einrichtung zur Echounterdrückung - Google Patents

Einrichtung zur Echounterdrückung

Info

Publication number
DE69631708D1
DE69631708D1 DE69631708T DE69631708T DE69631708D1 DE 69631708 D1 DE69631708 D1 DE 69631708D1 DE 69631708 T DE69631708 T DE 69631708T DE 69631708 T DE69631708 T DE 69631708T DE 69631708 D1 DE69631708 D1 DE 69631708D1
Authority
DE
Germany
Prior art keywords
echo cancellation
cancellation device
echo
cancellation
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 - Lifetime
Application number
DE69631708T
Other languages
English (en)
Other versions
DE69631708T2 (de
Inventor
Akira Inoue
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of DE69631708D1 publication Critical patent/DE69631708D1/de
Application granted granted Critical
Publication of DE69631708T2 publication Critical patent/DE69631708T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/015—Reducing echo effects
    • 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
    • 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
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE1996631708 1995-03-09 1996-03-04 Einrichtung zur Echounterdrückung Expired - Lifetime DE69631708T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5002595 1995-03-09
JP05002595A JP3381112B2 (ja) 1995-03-09 1995-03-09 エコー除去装置

Publications (2)

Publication Number Publication Date
DE69631708D1 true DE69631708D1 (de) 2004-04-08
DE69631708T2 DE69631708T2 (de) 2005-01-13

Family

ID=12847468

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996631708 Expired - Lifetime DE69631708T2 (de) 1995-03-09 1996-03-04 Einrichtung zur Echounterdrückung

Country Status (8)

Country Link
US (1) US5737409A (de)
EP (1) EP0731593B1 (de)
JP (1) JP3381112B2 (de)
KR (1) KR100415525B1 (de)
CN (1) CN1118179C (de)
DE (1) DE69631708T2 (de)
MY (1) MY117594A (de)
TW (1) TW286467B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256394B1 (en) * 1996-01-23 2001-07-03 U.S. Philips Corporation Transmission system for correlated signals
EP0951798B1 (de) * 1996-04-03 2002-07-03 BRITISH TELECOMMUNICATIONS public limited company Korrektur einer akustischen rückkopplung
JPH10257583A (ja) * 1997-03-06 1998-09-25 Asahi Chem Ind Co Ltd 音声処理装置およびその音声処理方法
DE19831320A1 (de) * 1998-07-13 2000-01-27 Ericsson Telefon Ab L M Digitales adaptives Filter und akustischer Echokompensator
JP2000252881A (ja) * 1999-02-25 2000-09-14 Mitsubishi Electric Corp ダブルトーク検知装置並びにエコーキャンセラ装置およびエコーサプレッサー装置
GB2350969B (en) 1999-06-07 2003-11-05 Ericsson Telefon Ab L M Loudspeaker volume range control
KR100399902B1 (ko) * 2001-05-02 2003-09-29 주식회사 하이닉스반도체 고속 유선 통신용 액티브 하이브리드 회로
US7778408B2 (en) * 2004-12-30 2010-08-17 Texas Instruments Incorporated Method and apparatus for acoustic echo cancellation utilizing dual filters
JP4765117B2 (ja) 2006-03-02 2011-09-07 オンセミコンダクター・トレーディング・リミテッド エコー防止回路、フィルタ係数設定方法、及びプログラム
CN101453244A (zh) * 2007-11-28 2009-06-10 博通集成电路（上海）有限公司 线回波消除器
CN106534600A (zh) * 2016-11-24 2017-03-22 浪潮（苏州）金融技术服务有限公司 一种回声消除装置、方法及***

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880001981B1 (ko) * 1983-01-19 1988-10-08 에스티씨 피엘씨 반향제거기
US4591669A (en) * 1984-09-26 1986-05-27 At&T Bell Laboratories Adaptive filter update gain normalization
DE3840433A1 (de) * 1988-12-01 1990-06-07 Philips Patentverwaltung Echokompensator
CA2054606C (en) * 1990-11-01 1994-06-28 Akihiko Sugiyama Tap-weight adaptation control using stepsize inversely variable with signal power level
KR950005942B1 (ko) * 1992-05-28 1995-06-07 삼성전자주식회사 디지탈 적응필터의 동작영역 판단장치
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
JP2538176B2 (ja) * 1993-05-28 1996-09-25 松下電器産業株式会社 エコ―制御装置
US5477534A (en) * 1993-07-30 1995-12-19 Kyocera Corporation Acoustic echo canceller
US5572621A (en) * 1993-09-21 1996-11-05 U.S. Philips Corporation Speech signal processing device with continuous monitoring of signal-to-noise ratio
JP2947093B2 (ja) * 1994-11-02 1999-09-13 日本電気株式会社 適応フィルタによるシステム同定の方法および装置

Also Published As

Publication number Publication date
EP0731593A2 (de) 1996-09-11
CN1157522A (zh) 1997-08-20
MY117594A (en) 2004-07-31
JPH08251081A (ja) 1996-09-27
TW286467B (de) 1996-09-21
EP0731593A3 (de) 2001-08-22
KR960036375A (ko) 1996-10-28
DE69631708T2 (de) 2005-01-13
US5737409A (en) 1998-04-07
JP3381112B2 (ja) 2003-02-24
EP0731593B1 (de) 2004-03-03
CN1118179C (zh) 2003-08-13
KR100415525B1 (ko) 2004-04-28

Similar Documents

Publication Publication Date Title
DE69636361D1 (de) Akustischer Echokompensator
DE69522088D1 (de) Teilbandechokompensator
FI974431A0 (fi) Taustamelun poisto- ja vähennyslaite
DE69209367D1 (de) System zur Auslöschung des Echos
DE69632851D1 (de) Akustischer Teilband-Echokompensator
BR9606198A (pt) Aparelho
DE69634027D1 (de) Akustischer Teilband-Echokompensator
DE69618097D1 (de) Gerät zur Schwingungsisolierung
DE59605337D1 (de) Einrichtung zur Verminderung von Störschall
DE69632426D1 (de) Akustischer Echokompensator
DE69631708D1 (de) Einrichtung zur Echounterdrückung
DE19681482T1 (de) Seeschiffahrtsvorrichtung
DE69534663D1 (de) Echo-Löscher
DE69616296D1 (de) Armaturvorrichtung
DE69611784D1 (de) Schiffsgerät
BR9612042A (pt) Dispositivo de válvula
BR9611186A (pt) Aparelho moedor-misturador
DE69607306D1 (de) Verzurreinrichtung
DE69633454D1 (de) Adaptives echounterdrückungsverfahren
IT1279616B1 (it) Dispositivo gommatore
KR970028591U (ko) 자동차의앤티다이브장치
IT1279619B1 (it) Dispositivo gommatore
BR9603137A (pt) Aparelho
KR970000276A (ko) 뇌파유도장치
NO952670D0 (no) Ekkokompensator

Legal Events

Date Code Title Description
8364 No opposition during term of opposition