ES2189809T3 - Algoritmo adaptativo utilizando bloques de tamaño variable para la cancelacion de eco acustico resistente al ruido. - Google Patents

Algoritmo adaptativo utilizando bloques de tamaño variable para la cancelacion de eco acustico resistente al ruido.

Info

Publication number
ES2189809T3
ES2189809T3 ES94932117T ES94932117T ES2189809T3 ES 2189809 T3 ES2189809 T3 ES 2189809T3 ES 94932117 T ES94932117 T ES 94932117T ES 94932117 T ES94932117 T ES 94932117T ES 2189809 T3 ES2189809 T3 ES 2189809T3
Authority
ES
Spain
Prior art keywords
noise
cancellation
resistant
eco
acoustic
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
ES94932117T
Other languages
English (en)
Inventor
Gilbert C Sih
Franklin P Antonio
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.)
Qualcomm Inc
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 ES2189809T3 publication Critical patent/ES2189809T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters

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)

Abstract

SE PRESENTA UN APARATO QUE AJUSTA AUTOMATICAMENTE EL TAMAÑO DEL BLOQUE DE ADAPTACION PARA UN FILTRO ADAPTATIVO DE MINIMOS CUADRATICOS "LEAST-MEAN" (LMS) QUE DEPENDE DE LA RELACION DE SEÑAL/RUIDO DE ENTRADA. EL APARATO MONITORIZA EL SNR INSTANTANEO (22) Y AJUSTA CONTINUAMENTE EL TAMAÑO DEL BLOQUE (20, 26) PARA SUMINISTRAR ALTA INMUNIDAD CONTRA EL RUIDO, INCREMENTANDO DE ESTA FORMA LA VELOCIDAD DE CONVERGENCIA DEL FILTRO Y HACIENDO DESCENDER EL ERROR CUADRATICO MEDIO ASINTOTICO. UNA REALIZACION EJEMPLAR DE LA INVENCION SE PRESENTA EN EL CONTEXTO DE CANCELACION DE ECO ACUSTICO, A TRAVES DE LA CUAL SE NOTA QUE EL FILTRO ADAPTATIVO DE LA INVENCION ES UTIL EN CUALQUIER MEDIO EN EL CUAL LAS CARACTERISTICAS DEL RUIDO ESTEN SUJETAS AL CAMBIO.
ES94932117T 1993-11-01 1994-10-27 Algoritmo adaptativo utilizando bloques de tamaño variable para la cancelacion de eco acustico resistente al ruido. Expired - Lifetime ES2189809T3 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES2189809T3 true ES2189809T3 (es) 2003-07-16

Family

ID=22518322

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94932117T Expired - Lifetime ES2189809T3 (es) 1993-11-01 1994-10-27 Algoritmo adaptativo utilizando bloques de tamaño variable para la cancelacion de eco acustico resistente al ruido.

Country Status (17)

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

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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
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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
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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
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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
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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
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Also Published As

Publication number Publication date
KR960706225A (ko) 1996-11-08
WO1995012919A1 (en) 1995-05-11
IL111451A0 (en) 1994-12-29
ATE230174T1 (de) 2003-01-15
CA2174342C (en) 1999-12-14
US5546459A (en) 1996-08-13
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 (en) 2002-12-18
FI961824A0 (fi) 1996-04-29
EP0727109A1 (en) 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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