DE69636570D1 - Echokompensation und -unterdrückung - Google Patents

Echokompensation und -unterdrückung

Info

Publication number
DE69636570D1
DE69636570D1 DE69636570T DE69636570T DE69636570D1 DE 69636570 D1 DE69636570 D1 DE 69636570D1 DE 69636570 T DE69636570 T DE 69636570T DE 69636570 T DE69636570 T DE 69636570T DE 69636570 D1 DE69636570 D1 DE 69636570D1
Authority
DE
Germany
Prior art keywords
hybrid
wire loop
signal
echo
echo suppressor
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
DE69636570T
Other languages
English (en)
Other versions
DE69636570T2 (de
Inventor
Herbert M K Chen
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.)
Microsemi Semiconductor US Inc
Original Assignee
Legerity Inc
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 Legerity Inc filed Critical Legerity Inc
Application granted granted Critical
Publication of DE69636570D1 publication Critical patent/DE69636570D1/de
Publication of DE69636570T2 publication Critical patent/DE69636570T2/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
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69636570T 1995-02-17 1996-01-26 Echokompensation und -unterdrückung Expired - Lifetime DE69636570T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US390320 1989-08-07
US08/390,320 US5852661A (en) 1995-02-17 1995-02-17 Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes

Publications (2)

Publication Number Publication Date
DE69636570D1 true DE69636570D1 (de) 2006-11-09
DE69636570T2 DE69636570T2 (de) 2007-06-21

Family

ID=23542024

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69636570T Expired - Lifetime DE69636570T2 (de) 1995-02-17 1996-01-26 Echokompensation und -unterdrückung

Country Status (6)

Country Link
US (1) US5852661A (de)
EP (1) EP0727882B1 (de)
JP (1) JPH08331021A (de)
KR (1) KR960032929A (de)
AT (1) ATE341129T1 (de)
DE (1) DE69636570T2 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106489B (fi) * 1996-06-19 2001-02-15 Nokia Networks Oy Kaikusalpa ja kaiunpoistajan epälineaarinen prosessori
DE19639703C2 (de) * 1996-09-26 1999-05-20 Siemens Ag Verfahren und Anordnung zur Echokompensation
DE19639702C2 (de) * 1996-09-26 2000-11-16 Siemens Ag Verfahren und Anordnung zur Begrenzung des Restechos
DE19702117C1 (de) * 1997-01-22 1997-11-20 Siemens Ag Echosperre für ein Spracheingabe Dialogsystem
US5999828A (en) * 1997-03-19 1999-12-07 Qualcomm Incorporated Multi-user wireless telephone having dual echo cancellers
WO1999014868A1 (fr) * 1997-09-16 1999-03-25 Sanyo Electric Co., Ltd. Procede de suppression d'echo, annuleur d'echo et commutateur vocal
GB2330744B (en) * 1997-10-24 2002-05-29 Mitel Corp Howling controller
CN1262818A (zh) * 1998-01-30 2000-08-09 皇家菲利浦电子有限公司 通信系统中消除回声的方法、通信装置和无绳电话装置的无线电基站
US6584159B1 (en) * 1998-11-09 2003-06-24 Agere Systems Inc. Mixed-mode next/echo canceller for pulse amplitude modulated (PAM) signals
US6985492B1 (en) * 1999-04-13 2006-01-10 Broadcom Corporation Voice gateway with voice synchronization
US6765931B1 (en) * 1999-04-13 2004-07-20 Broadcom Corporation Gateway with voice
US6426979B1 (en) 1999-04-29 2002-07-30 Legerity, Inc. Adaptation control algorithm for echo cancellation using signal-value based analysis
JP3611493B2 (ja) * 1999-11-17 2005-01-19 沖電気工業株式会社 エコーキャンセラ装置
WO2001043334A2 (en) 1999-12-13 2001-06-14 Broadcom Corporation Voice gateway with downstream voice synchronization
US6606382B2 (en) * 2000-01-27 2003-08-12 Qualcomm Incorporated System and method for implementation of an echo canceller
US7065207B2 (en) * 2003-09-11 2006-06-20 Freescale Semiconductor, Inc. Controlling attenuation during echo suppression
JP4835611B2 (ja) * 2008-03-03 2011-12-14 岩崎通信機株式会社 エコー低減方法と装置
US20100235523A1 (en) * 2009-03-16 2010-09-16 Robert Garcia Framework for supporting multi-device collaboration
US10277683B2 (en) 2009-03-16 2019-04-30 Apple Inc. Multifunctional devices as virtual accessories
US8285860B2 (en) 2009-03-16 2012-10-09 Apple Inc. Efficient service discovery for peer-to-peer networking devices
US20100233960A1 (en) * 2009-03-16 2010-09-16 Brian Tucker Service discovery functionality utilizing personal area network protocols
GB201309771D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal
GB201309773D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal
GB201309777D0 (en) * 2013-05-31 2013-07-17 Microsoft Corp Echo suppression
GB201309779D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE426764B (sv) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab Forfarande att astadkomma adaptiv ekoeliminering vid overforing av digital information i duplex jemte anordning for utforande av forfarandet
US4707824A (en) * 1983-12-15 1987-11-17 Nec Corporation Method and apparatus for cancelling echo
JPS645233A (en) * 1987-06-29 1989-01-10 Oki Electric Ind Co Ltd Echo canceller
US5014263A (en) * 1987-10-02 1991-05-07 Advanced Micro Devices, Inc. Adaptive echo-canceller with double-talker detection
JPH02174353A (ja) * 1988-12-27 1990-07-05 Fujitsu Ltd エコーキヤンセラ
FR2651077B1 (fr) * 1989-08-18 1994-06-10 Letourneur Gregoire Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique
JP2518433B2 (ja) * 1990-01-24 1996-07-24 日本電気株式会社 ダブルト―ク検出回路
US5075687A (en) * 1990-09-27 1991-12-24 Advanced Micro Devices, Inc. Echo suppression with both digital and analog variable attenuators
US5134658A (en) * 1990-09-27 1992-07-28 Advanced Micro Devices, Inc. Apparatus for discriminating information signals from noise signals in a communication signal
SE469677B (sv) * 1992-01-10 1993-08-16 Ericsson Telefon Ab L M Anordning foer att minska risken foer en icke oenskad parameterdrift hos ett adaptivt filter som anvaends foer ekoeliminering

Also Published As

Publication number Publication date
EP0727882B1 (de) 2006-09-27
DE69636570T2 (de) 2007-06-21
ATE341129T1 (de) 2006-10-15
JPH08331021A (ja) 1996-12-13
EP0727882A2 (de) 1996-08-21
EP0727882A3 (de) 2001-11-28
KR960032929A (ko) 1996-09-17
US5852661A (en) 1998-12-22

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Legal Events

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