ATE230174T1 - Adaptiver algorithmus mit variablen blocklängen für rauschrobuste akustische echokompensation - Google Patents

Adaptiver algorithmus mit variablen blocklängen für rauschrobuste akustische echokompensation

Info

Publication number
ATE230174T1
ATE230174T1 AT94932117T AT94932117T ATE230174T1 AT E230174 T1 ATE230174 T1 AT E230174T1 AT 94932117 T AT94932117 T AT 94932117T AT 94932117 T AT94932117 T AT 94932117T AT E230174 T1 ATE230174 T1 AT E230174T1
Authority
AT
Austria
Prior art keywords
noise
acoustic echo
block length
adaptive algorithm
variable block
Prior art date
Application number
AT94932117T
Other languages
English (en)
Inventor
Gilbert C Sih
Franklin P Antonio
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE230174T1 publication Critical patent/ATE230174T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
AT94932117T 1993-11-01 1994-10-27 Adaptiver algorithmus mit variablen blocklängen für rauschrobuste akustische echokompensation ATE230174T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/146,644 US5546459A (en) 1993-11-01 1993-11-01 Variable block size adaptation algorithm for noise-robust acoustic echo cancellation
PCT/US1994/012449 WO1995012919A1 (en) 1993-11-01 1994-10-27 A variable block size adaptation algorithm for noise-robust acoustic echo cancellation

Publications (1)

Publication Number Publication Date
ATE230174T1 true ATE230174T1 (de) 2003-01-15

Family

ID=22518322

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94932117T ATE230174T1 (de) 1993-11-01 1994-10-27 Adaptiver algorithmus mit variablen blocklängen für rauschrobuste akustische echokompensation

Country Status (17)

Country Link
US (1) US5546459A (de)
EP (1) EP0727109B1 (de)
JP (1) JP3351532B2 (de)
KR (1) KR100196011B1 (de)
CN (1) CN1074871C (de)
AT (1) ATE230174T1 (de)
AU (1) AU692487B2 (de)
BR (1) BR9407935A (de)
CA (1) CA2174342C (de)
DE (1) DE69431923T2 (de)
DK (1) DK0727109T3 (de)
ES (1) ES2189809T3 (de)
FI (1) FI113922B (de)
IL (1) IL111451A (de)
TW (1) TW351039B (de)
WO (1) WO1995012919A1 (de)
ZA (1) ZA948430B (de)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094422A (en) * 1994-02-09 2000-07-25 3Com Corporation Echo canceller touch-up period in an echo-cancelling modem
US5592548A (en) * 1995-05-31 1997-01-07 Qualcomm Incorporated System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
KR0179166B1 (ko) * 1995-10-04 1999-05-01 문정환 디지탈 영상신호처리용 메모리장치
US5978473A (en) * 1995-12-27 1999-11-02 Ericsson Inc. Gauging convergence of adaptive filters
US5887059A (en) * 1996-01-30 1999-03-23 Advanced Micro Devices, Inc. System and method for performing echo cancellation in a communications network employing a mixed mode LMS adaptive balance filter
JP2924762B2 (ja) * 1996-02-28 1999-07-26 日本電気株式会社 アダプティブフィルタ及びその適応化方法
US5999828A (en) * 1997-03-19 1999-12-07 Qualcomm Incorporated Multi-user wireless telephone having dual echo cancellers
DE19747885B4 (de) * 1997-10-30 2009-04-23 Harman Becker Automotive Systems Gmbh Verfahren zur Reduktion von Störungen akustischer Signale mittels der adaptiven Filter-Methode der spektralen Subtraktion
US6570985B1 (en) * 1998-01-09 2003-05-27 Ericsson Inc. Echo canceler adaptive filter optimization
KR19990080389A (ko) * 1998-04-16 1999-11-05 구자홍 가변 스텝크기를 이용한 에코 소거방법
DE19818609C2 (de) * 1998-04-20 2000-06-15 Deutsche Telekom Ag Verfahren und Vorrichtung zur Geräuschfilterung
DE19828654C2 (de) * 1998-06-26 2000-05-31 Siemens Ag Empfängereinheit in einer Fernvermittlungsanlage zum Erfassen von im Sprachkanal übertragenen vermittlungstechnischen Steuersignalen und Verfahren zum Betreiben der Empfängereinheit
US6542611B1 (en) * 1998-07-31 2003-04-01 Circuit Research Labs, Inc. Multi-state echo suppressor
JP2001016057A (ja) 1999-07-01 2001-01-19 Matsushita Electric Ind Co Ltd 音響装置
US6580793B1 (en) * 1999-08-31 2003-06-17 Lucent Technologies Inc. Method and apparatus for echo cancellation with self-deactivation
JP3640576B2 (ja) * 1999-09-07 2005-04-20 沖電気工業株式会社 エコーキャンセラ、及びその動作方法
GB2356328B (en) * 1999-11-11 2002-10-30 Motorola Israel Ltd Echo suppression and echo cancellation
DE19957220A1 (de) * 1999-11-27 2001-06-21 Alcatel Sa An den aktuellen Geräuschpegel adaptierte Geräuschunterdrückung
JP2002152081A (ja) * 2000-11-07 2002-05-24 Matsushita Electric Ind Co Ltd 受信装置及び受信装置における基準周波数制御方法
ATE449465T1 (de) 2001-04-12 2009-12-15 Juniper Networks Inc Zugangsrauschunterdrückung in einem digitalen empfänger
US20040173277A1 (en) * 2003-01-22 2004-09-09 Brandel Lennart J. Glass textile fabric
GB2408398B (en) * 2003-11-18 2005-11-23 Motorola Inc Calibration device for a phased locked loop synthesiser
US7582716B2 (en) 2004-03-17 2009-09-01 Dow Global Technologies Inc. Compositions of ethylene/α-olefin multi-block interpolymer for blown films with high hot tack
US20060018460A1 (en) * 2004-06-25 2006-01-26 Mccree Alan V Acoustic echo devices and methods
US7577248B2 (en) * 2004-06-25 2009-08-18 Texas Instruments Incorporated Method and apparatus for echo cancellation, digit filter adaptation, automatic gain control and echo suppression utilizing block least mean squares
US20060045242A1 (en) * 2004-09-01 2006-03-02 Sbc Knowledge Ventures, L.P. Deployment of announcements in local exchange switching platform
US7724693B2 (en) * 2005-07-28 2010-05-25 Qnx Software Systems (Wavemakers), Inc. Network dependent signal processing
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
US7738655B2 (en) * 2006-04-12 2010-06-15 Texas Instruments Incorporated Interference canceller tap sharing in a communications transceiver
US7876906B2 (en) 2006-05-30 2011-01-25 Sonitus Medical, Inc. Methods and apparatus for processing audio signals
CN101089952B (zh) * 2006-06-15 2010-10-06 株式会社东芝 噪声抑制、提取特征、训练模型及语音识别的方法和装置
US8291912B2 (en) 2006-08-22 2012-10-23 Sonitus Medical, Inc. Systems for manufacturing oral-based hearing aid appliances
EP1950739B1 (de) * 2007-01-23 2011-09-14 Siemens Aktiengesellschaft Österreich Verfahren zur Identifikation von Signalen gleichen Ursprungs
US8259928B2 (en) * 2007-04-23 2012-09-04 Microsoft Corporation Method and apparatus for reducing timestamp noise in audio echo cancellation
US8270638B2 (en) 2007-05-29 2012-09-18 Sonitus Medical, Inc. Systems and methods to provide communication, positioning and monitoring of user status
US8433080B2 (en) 2007-08-22 2013-04-30 Sonitus Medical, Inc. Bone conduction hearing device with open-ear microphone
US8224013B2 (en) 2007-08-27 2012-07-17 Sonitus Medical, Inc. Headset systems and methods
US7682303B2 (en) 2007-10-02 2010-03-23 Sonitus Medical, Inc. Methods and apparatus for transmitting vibrations
CN101159447B (zh) * 2007-11-16 2010-09-01 杭州华三通信技术有限公司 一种降低回波的方法及设备
US8795172B2 (en) 2007-12-07 2014-08-05 Sonitus Medical, Inc. Systems and methods to provide two-way communications
US8270637B2 (en) 2008-02-15 2012-09-18 Sonitus Medical, Inc. Headset systems and methods
US7974845B2 (en) 2008-02-15 2011-07-05 Sonitus Medical, Inc. Stuttering treatment methods and apparatus
US8023676B2 (en) * 2008-03-03 2011-09-20 Sonitus Medical, Inc. Systems and methods to provide communication and monitoring of user status
US20090226020A1 (en) 2008-03-04 2009-09-10 Sonitus Medical, Inc. Dental bone conduction hearing appliance
US8150075B2 (en) 2008-03-04 2012-04-03 Sonitus Medical, Inc. Dental bone conduction hearing appliance
US8498407B2 (en) * 2008-12-02 2013-07-30 Qualcomm Incorporated Systems and methods for double-talk detection in acoustically harsh environments
US8433082B2 (en) 2009-10-02 2013-04-30 Sonitus Medical, Inc. Intraoral appliance for sound transmission via bone conduction
US8903685B2 (en) 2010-10-27 2014-12-02 King Fahd University Of Petroleum And Minerals Variable step-size least mean square method for estimation in adaptive networks
CN102739287A (zh) * 2012-07-09 2012-10-17 上海电机学院 基于自适应时延估计的回波抵消方法
JP6109450B2 (ja) 2014-12-15 2017-04-05 三菱電機株式会社 エコーキャンセラ装置およびエコーキャンセル方法
US12531047B2 (en) 2023-05-09 2026-01-20 Nokia Technologies Oy Acoustic echo cancellation
CN117636880A (zh) * 2023-12-13 2024-03-01 南京龙垣信息科技有限公司 一种用于提升语音外呼辨音准确率的声纹识别方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712235A (en) * 1984-11-19 1987-12-08 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller
JPH0622352B2 (ja) * 1988-10-12 1994-03-23 勝敏 嶺 ノイズ除去方法
US4987569A (en) * 1989-04-05 1991-01-22 Codex Corporation Fast training echo canceller
US4947425A (en) * 1989-10-27 1990-08-07 At&T Bell Laboratories Echo measurement arrangement
US5111481A (en) * 1989-11-17 1992-05-05 Nynex Corporation Dual mode LMS channel equalizer
US5084866A (en) * 1990-04-10 1992-01-28 Level One Communications, Inc. Transversal filter echo canceller
US5297186A (en) * 1991-07-29 1994-03-22 Codex Corporation Device and method for on-line adaptive selection of baud rate and carrier frequency
EP0530423B1 (de) * 1991-09-06 1996-12-11 International Business Machines Corporation Verfahren zur adaptiven Echokompensation und Einrichtung zur Durchführung des Verfahrens
US5337366A (en) * 1992-07-07 1994-08-09 Sharp Kabushiki Kaisha Active control apparatus using adaptive digital filter
US5410595A (en) * 1992-11-12 1995-04-25 Motorola, Inc. Apparatus and method for noise reduction for a full-duplex speakerphone or the like

Also Published As

Publication number Publication date
KR960706225A (ko) 1996-11-08
WO1995012919A1 (en) 1995-05-11
IL111451A0 (en) 1994-12-29
CA2174342C (en) 1999-12-14
US5546459A (en) 1996-08-13
ES2189809T3 (es) 2003-07-16
DE69431923D1 (de) 2003-01-30
CN1074871C (zh) 2001-11-14
BR9407935A (pt) 1996-11-26
FI961824L (fi) 1996-06-28
KR100196011B1 (ko) 1999-06-15
FI113922B (fi) 2004-06-30
EP0727109B1 (de) 2002-12-18
FI961824A0 (fi) 1996-04-29
EP0727109A1 (de) 1996-08-21
JP3351532B2 (ja) 2002-11-25
HK1011119A1 (en) 1999-07-02
TW351039B (en) 1999-01-21
DE69431923T2 (de) 2003-11-06
AU692487B2 (en) 1998-06-11
ZA948430B (en) 1995-06-29
IL111451A (en) 2000-08-13
DK0727109T3 (da) 2003-03-24
CA2174342A1 (en) 1995-05-11
AU8096294A (en) 1995-05-23
JPH09504668A (ja) 1997-05-06
CN1133655A (zh) 1996-10-16

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