MX2010008372A - Aparato y metodo para calcular coeficientes de filtro para supresion de eco. - Google Patents

Aparato y metodo para calcular coeficientes de filtro para supresion de eco.

Info

Publication number
MX2010008372A
MX2010008372A MX2010008372A MX2010008372A MX2010008372A MX 2010008372 A MX2010008372 A MX 2010008372A MX 2010008372 A MX2010008372 A MX 2010008372A MX 2010008372 A MX2010008372 A MX 2010008372A MX 2010008372 A MX2010008372 A MX 2010008372A
Authority
MX
Mexico
Prior art keywords
signal
filter coefficients
computing
stationary component
echo suppression
Prior art date
Application number
MX2010008372A
Other languages
English (en)
Inventor
Christof Faller
Markus Kallinger
Alexis Favrot
Fabian Kuech
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2010008372A publication Critical patent/MX2010008372A/es

Links

Classifications

    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • 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
    • H04B3/237—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 two adaptive filters, e.g. for near end and for end echo cancelling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)

Abstract

Se describe un método y aparato para calcular coeficientes de filtro para supresión de eco. Una modalidad de un aparato (200) para calcular coeficientes de filtro para un filtro adaptable (210) para la filtración de una señal de micrófono para suprimir el eco debido a una señal de altavoz incluye medios de extracción (250) para extraer una señal componente estacionaria o una señal componente no estacionaria de la señal de altavoz o de una señal derivada de la señal de altavoz y medios de cálculo (270) para calcular los coeficientes de filtro para el filtro adaptable (210) en base a la señal componente estacionaria extraída o la señal componente no estacionaria extraída.
MX2010008372A 2008-01-31 2009-01-16 Aparato y metodo para calcular coeficientes de filtro para supresion de eco. MX2010008372A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2500608P 2008-01-31 2008-01-31
DE102008039330A DE102008039330A1 (de) 2008-01-31 2008-08-22 Vorrichtung und Verfahren zum Berechnen von Filterkoeffizienten zur Echounterdrückung
PCT/EP2009/000270 WO2009095161A1 (en) 2008-01-31 2009-01-16 Apparatus and method for computing filter coefficients for echo suppression

Publications (1)

Publication Number Publication Date
MX2010008372A true MX2010008372A (es) 2010-08-23

Family

ID=40847455

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010008372A MX2010008372A (es) 2008-01-31 2009-01-16 Aparato y metodo para calcular coeficientes de filtro para supresion de eco.

Country Status (14)

Country Link
US (1) US8462958B2 (es)
EP (1) EP2238590B1 (es)
JP (1) JP4954334B2 (es)
KR (1) KR101169535B1 (es)
CN (1) CN101933088B (es)
AU (1) AU2009210295B9 (es)
BR (1) BRPI0905794A2 (es)
CA (1) CA2713450C (es)
DE (1) DE102008039330A1 (es)
ES (1) ES2585406T3 (es)
HK (1) HK1149622A1 (es)
MX (1) MX2010008372A (es)
TW (1) TWI388190B (es)
WO (1) WO2009095161A1 (es)

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Also Published As

Publication number Publication date
AU2009210295B9 (en) 2014-01-30
TW200948030A (en) 2009-11-16
CA2713450A1 (en) 2009-08-06
US8462958B2 (en) 2013-06-11
TWI388190B (zh) 2013-03-01
CN101933088A (zh) 2010-12-29
HK1149622A1 (zh) 2011-10-07
JP2011514706A (ja) 2011-05-06
DE102008039330A1 (de) 2009-08-13
KR20100114059A (ko) 2010-10-22
AU2009210295A1 (en) 2009-08-06
AU2009210295B2 (en) 2013-05-02
ES2585406T3 (es) 2016-10-05
CA2713450C (en) 2014-07-29
JP4954334B2 (ja) 2012-06-13
CN101933088B (zh) 2016-05-11
EP2238590A1 (en) 2010-10-13
WO2009095161A1 (en) 2009-08-06
US20110019833A1 (en) 2011-01-27
RU2010132161A (ru) 2012-02-10
EP2238590B1 (en) 2016-06-01
BRPI0905794A2 (pt) 2020-08-11
KR101169535B1 (ko) 2012-07-31

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