ATE334512T1 - Echokompensator und dessen lernverfahren - Google Patents

Echokompensator und dessen lernverfahren

Info

Publication number
ATE334512T1
ATE334512T1 AT95917503T AT95917503T ATE334512T1 AT E334512 T1 ATE334512 T1 AT E334512T1 AT 95917503 T AT95917503 T AT 95917503T AT 95917503 T AT95917503 T AT 95917503T AT E334512 T1 ATE334512 T1 AT E334512T1
Authority
AT
Austria
Prior art keywords
pseudo noise
echo
end talker
far
voice
Prior art date
Application number
AT95917503T
Other languages
English (en)
Inventor
Toshiro Kawahara
Toshio Miki
Tomoyuki Ohya
Original Assignee
Nippon Telegraph & Telephone
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
Priority claimed from JP11759494A external-priority patent/JP3304609B2/ja
Priority claimed from JP11759294A external-priority patent/JPH07303064A/ja
Priority claimed from JP11759394A external-priority patent/JP3212796B2/ja
Priority claimed from JP11758894A external-priority patent/JP3303524B2/ja
Application filed by Nippon Telegraph & Telephone filed Critical Nippon Telegraph & Telephone
Application granted granted Critical
Publication of ATE334512T1 publication Critical patent/ATE334512T1/de

Links

Classifications

    • 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
    • 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
    • H04B3/238—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 using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Networks Using Active Elements (AREA)
AT95917503T 1994-05-07 1995-05-02 Echokompensator und dessen lernverfahren ATE334512T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP11759494A JP3304609B2 (ja) 1994-05-07 1994-05-07 エコーキャンセラ学習方法
JP11759294A JPH07303064A (ja) 1994-05-07 1994-05-07 エコーキャンセラ
JP11759394A JP3212796B2 (ja) 1994-05-07 1994-05-07 エコーキャンセラ
JP11758894A JP3303524B2 (ja) 1994-05-07 1994-05-07 エコーキャンセラ学習方法

Publications (1)

Publication Number Publication Date
ATE334512T1 true ATE334512T1 (de) 2006-08-15

Family

ID=27470447

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95917503T ATE334512T1 (de) 1994-05-07 1995-05-02 Echokompensator und dessen lernverfahren

Country Status (8)

Country Link
US (1) US6061444A (de)
EP (1) EP0708536B8 (de)
KR (1) KR100241708B1 (de)
CN (4) CN1284309C (de)
AT (1) ATE334512T1 (de)
CA (1) CA2162571C (de)
DE (1) DE69535121T8 (de)
WO (1) WO1995031051A1 (de)

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JP3579245B2 (ja) * 1998-03-31 2004-10-20 三洋電機株式会社 エコーキャンセラの制御方法およびエコー除去装置
JP3437445B2 (ja) * 1998-05-22 2003-08-18 松下電器産業株式会社 線形信号予測を用いた受信装置及び方法
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US6707912B2 (en) 1999-03-11 2004-03-16 Motorola, Inc. Method and apparatus for setting a step size for an adaptive filter coefficient of an echo canceller
US6510224B1 (en) * 1999-05-20 2003-01-21 Telefonaktiebolaget L M Ericsson Enhancement of near-end voice signals in an echo suppression system
US7062039B1 (en) * 1999-05-27 2006-06-13 Telefonaktiebolaget Lm Ericsson Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
US6301364B1 (en) * 1999-10-06 2001-10-09 Acoustic Technologies, Inc. Tagging echoes with low frequency noise
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US6534964B1 (en) * 2000-09-22 2003-03-18 International Business Machines Corporation Apparatus and method for determining stiffness properties of an anisotropic electronic substrate using scanning acoustic microscopy
KR20030023216A (ko) * 2001-09-12 2003-03-19 주식회사 텔루션 디지털 이동통신 시스템에서의 반향경로 예측을 이용한반향제거시스템 및 반향제거방법
US7546125B2 (en) 2005-10-03 2009-06-09 Divitas Networks, Inc. Enhancing user experience during handoffs in wireless communication
US20080317241A1 (en) * 2006-06-14 2008-12-25 Derek Wang Code-based echo cancellation
US20080140767A1 (en) * 2006-06-14 2008-06-12 Prasad Rao Divitas description protocol and methods therefor
US20090016333A1 (en) * 2006-06-14 2009-01-15 Derek Wang Content-based adaptive jitter handling
US20080101337A1 (en) * 2006-10-31 2008-05-01 Tsu-Chun Liu Communications system, local area communications network system, their network interface chipset and physical layer circuit thereof
US8160240B2 (en) * 2008-05-28 2012-04-17 Microsemi Semiconductor (U.S.) Inc. Echo cancellation balance using noise generator and average power detection
US20100222053A1 (en) * 2009-02-27 2010-09-02 Girisrinivasarao Athulurutirumala Arrangement and methods for establishing a telecommunication connection based on a heuristic model
WO2011034090A1 (ja) 2009-09-18 2011-03-24 日本電気株式会社 音声品質解析装置、音声品質解析方法およびプログラム
JP6011751B1 (ja) * 2016-02-04 2016-10-19 三菱電機株式会社 音声通話装置
CN105744210B (zh) * 2016-04-15 2018-10-12 北京小米移动软件有限公司 视频会议的回声消除方法、装置及系统
CN114566176B (zh) * 2022-02-23 2024-07-09 宁波蛙声科技有限公司 基于深度神经网络的残余回声消除方法及系统

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JP2551171B2 (ja) * 1988-12-01 1996-11-06 日本電気株式会社 反響消去装置
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US4987569A (en) * 1989-04-05 1991-01-22 Codex Corporation Fast training echo canceller
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JPH0344218A (ja) * 1989-07-12 1991-02-26 Fujitsu Ltd 適応形エコーキャンセラ
DE3929555A1 (de) * 1989-09-06 1991-03-07 Sueddeutsche Kalkstickstoff Verfahren zur entfernung von cholesterin bzw. cholesterinestern aus lebensmitteln
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Also Published As

Publication number Publication date
CN1084977C (zh) 2002-05-15
CA2162571C (en) 2001-03-13
CN1284309C (zh) 2006-11-08
DE69535121T8 (de) 2007-12-13
DE69535121D1 (de) 2006-09-07
CN1377143A (zh) 2002-10-30
CN1558563B (zh) 2011-04-20
EP0708536B8 (de) 2006-09-13
CA2162571A1 (en) 1995-11-16
DE69535121T2 (de) 2007-06-28
KR100241708B1 (ko) 2000-02-01
EP0708536A4 (de) 2004-09-29
KR960704400A (ko) 1996-08-31
CN1558563A (zh) 2004-12-29
US6061444A (en) 2000-05-09
WO1995031051A1 (fr) 1995-11-16
CN1128592A (zh) 1996-08-07
EP0708536B1 (de) 2006-07-26
CN1392677A (zh) 2003-01-22
CN100349386C (zh) 2007-11-14
EP0708536A1 (de) 1996-04-24

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Legal Events

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