KR102170341B1 - 에코 억제 기법 - Google Patents

에코 억제 기법 Download PDF

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Publication number
KR102170341B1
KR102170341B1 KR1020157016502A KR20157016502A KR102170341B1 KR 102170341 B1 KR102170341 B1 KR 102170341B1 KR 1020157016502 A KR1020157016502 A KR 1020157016502A KR 20157016502 A KR20157016502 A KR 20157016502A KR 102170341 B1 KR102170341 B1 KR 102170341B1
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South Korea
Prior art keywords
echo
input signal
audio input
received audio
signal
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KR1020157016502A
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English (en)
Korean (ko)
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KR20150096423A (ko
Inventor
카르스텐 밴드보르그 소렌센
Original Assignee
마이크로소프트 테크놀로지 라이센싱, 엘엘씨
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    • 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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
KR1020157016502A 2012-12-21 2013-12-21 에코 억제 기법 Active KR102170341B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB1223246.8A GB2509493A (en) 2012-12-21 2012-12-21 Suppressing Echo in a received audio signal by estimating the echo power in the received audio signal based on an FIR filter estimate
GB1223246.8 2012-12-21
US13/889,229 2013-05-07
US13/889,229 US9036814B2 (en) 2012-12-21 2013-05-07 Echo suppression
PCT/US2013/077353 WO2014100792A1 (en) 2012-12-21 2013-12-21 Echo suppression

Publications (2)

Publication Number Publication Date
KR20150096423A KR20150096423A (ko) 2015-08-24
KR102170341B1 true KR102170341B1 (ko) 2020-10-26

Family

ID=47682465

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020157016502A Active KR102170341B1 (ko) 2012-12-21 2013-12-21 에코 억제 기법

Country Status (7)

Country Link
US (1) US9036814B2 (https=)
EP (1) EP2920948B1 (https=)
JP (1) JP6422884B2 (https=)
KR (1) KR102170341B1 (https=)
CN (1) CN104871520B (https=)
GB (1) GB2509493A (https=)
WO (1) WO2014100792A1 (https=)

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* Cited by examiner, † Cited by third party
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GB2510331A (en) 2012-12-21 2014-08-06 Microsoft Corp Echo suppression in an audio signal
GB2512022A (en) 2012-12-21 2014-09-24 Microsoft Corp Echo suppression
WO2017053490A1 (en) * 2015-09-25 2017-03-30 Microsemi Semiconductor (U.S.) Inc. Acoustic echo path change detection apparatus and method
KR102580418B1 (ko) * 2017-02-07 2023-09-20 삼성에스디에스 주식회사 어쿠스틱 에코 제거 장치 및 방법
US10602270B1 (en) 2018-11-30 2020-03-24 Microsoft Technology Licensing, Llc Similarity measure assisted adaptation control
CN113870889B (zh) * 2021-09-13 2025-08-26 支付宝(杭州)信息技术有限公司 一种回声消除中的时延估计方法、装置以及电子设备
US11902757B2 (en) 2022-06-14 2024-02-13 Tencent America LLC Techniques for unified acoustic echo suppression using a recurrent neural network

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JP2009021741A (ja) * 2007-07-11 2009-01-29 Yamaha Corp エコーキャンセラ

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SE511073C2 (sv) * 1997-09-10 1999-08-02 Ericsson Telefon Ab L M Sätt och anordning för ekoestimering och undertryckning i telefonsystem
US6256383B1 (en) 1997-11-07 2001-07-03 Legerity, Inc. IIR filter of adaptive balance circuit for long tail echo cancellation
US6570985B1 (en) 1998-01-09 2003-05-27 Ericsson Inc. Echo canceler adaptive filter optimization
US6549587B1 (en) 1999-09-20 2003-04-15 Broadcom Corporation Voice and data exchange over a packet based network with timing recovery
US7423983B1 (en) 1999-09-20 2008-09-09 Broadcom Corporation Voice and data exchange over a packet based network
JP3566158B2 (ja) 1999-12-07 2004-09-15 三菱電機株式会社 エコーキャンセラ装置
US7672447B1 (en) 2000-06-01 2010-03-02 Telefonaktiebolaget Lm Ericsson (Publ) Frequency domain echo canceller
US7046658B1 (en) * 2000-06-23 2006-05-16 At & T Corp. Method and system for customer selected direct dialed voice-over-internet protocol (VOIP)
JP3724705B2 (ja) * 2000-08-15 2005-12-07 日本電信電話株式会社 反響抑圧方法・反響抑圧装置
US7068780B1 (en) 2000-08-30 2006-06-27 Conexant, Inc. Hybrid echo canceller
JP4568439B2 (ja) * 2001-01-22 2010-10-27 パナソニック株式会社 エコー抑圧装置
US6785382B2 (en) 2001-02-12 2004-08-31 Signalworks, Inc. System and method for controlling a filter to enhance speakerphone performance
WO2002093774A1 (en) 2001-05-17 2002-11-21 Stmicroelectronics Asia Pacific Pte Ltd Echo canceller and a method of cancelling echo
US6950842B2 (en) 2002-01-23 2005-09-27 Analog Devices, Inc. Echo canceller having an adaptive filter with a dynamically adjustable step size
US6914978B2 (en) * 2002-08-16 2005-07-05 Ambit Microsystems Corp. Pulse dialing system for VoIP modem
US7082123B2 (en) * 2002-08-21 2006-07-25 Ambit Microsystems Corp. Silent redial system for VoIP modem
US7062040B2 (en) 2002-09-20 2006-06-13 Agere Systems Inc. Suppression of echo signals and the like
US7027591B2 (en) 2002-10-16 2006-04-11 Ericsson Inc. Integrated noise cancellation and residual echo suppression
US7162420B2 (en) 2002-12-10 2007-01-09 Liberato Technologies, Llc System and method for noise reduction having first and second adaptive filters
US7319748B2 (en) 2003-01-08 2008-01-15 Nxp B.V. Device and method for suppressing echo in telephones
US6947549B2 (en) 2003-02-19 2005-09-20 The Hong Kong Polytechnic University Echo canceller
US7099458B2 (en) 2003-12-12 2006-08-29 Motorola, Inc. Downlink activity and double talk probability detector and method for an echo canceler circuit
US9509854B2 (en) 2004-10-13 2016-11-29 Koninklijke Philips N.V. Echo cancellation
US7894598B2 (en) 2004-12-14 2011-02-22 Nuance Communications, Inc. System for limiting receive audio
JP2007097050A (ja) * 2005-09-30 2007-04-12 Saxa Inc エコー抑制回路および電話装置
DE602006009770D1 (de) 2006-05-08 2009-11-26 Harman Becker Automotive Sys Echoverringerung für zeitvariante Systeme
EP1879293B1 (en) 2006-07-10 2019-02-20 Harman Becker Automotive Systems GmbH Partitioned fast convolution in the time and frequency domain
US7983373B2 (en) 2007-02-07 2011-07-19 Vintomie Networks B.V., Llc Clock distribution for 10GBase-T analog front end
US8374851B2 (en) 2007-07-30 2013-02-12 Texas Instruments Incorporated Voice activity detector and method
ATE521064T1 (de) 2007-10-08 2011-09-15 Harman Becker Automotive Sys Verstärkung und spektralformenanpassung bei der verarbeitung von audiosignalen
US8275139B2 (en) 2008-03-26 2012-09-25 Ittiam Systems (P) Ltd. Linear full duplex system and method for acoustic echo cancellation
JP5125690B2 (ja) 2008-03-31 2013-01-23 ヤマハ株式会社 音響エコー除去装置
US8634569B2 (en) 2010-01-08 2014-01-21 Conexant Systems, Inc. Systems and methods for echo cancellation and echo suppression
NO332437B1 (no) * 2010-01-18 2012-09-17 Cisco Systems Int Sarl Apparat og fremgangsmate for a supprimere et akustisk ekko
US9185233B2 (en) 2010-05-25 2015-11-10 Intel Deutschland Gmbh Audio communication device and method using fixed echo cancellation filter coefficients
BR112013016222B1 (pt) 2011-02-03 2020-12-15 Telefonaktiebolaget L M Ericsson (Publ) Método de estimar a potência de eco, método de supressão de eco, estimador de potência de eco harmônico, cancelador de eco, e, equipamento de usuário
US8804977B2 (en) * 2011-03-18 2014-08-12 Dolby Laboratories Licensing Corporation Nonlinear reference signal processing for echo suppression
US9065895B2 (en) 2012-02-22 2015-06-23 Broadcom Corporation Non-linear echo cancellation
GB2512022A (en) 2012-12-21 2014-09-24 Microsoft Corp Echo suppression
GB2510331A (en) 2012-12-21 2014-08-06 Microsoft Corp Echo suppression in an audio signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007235874A (ja) * 2006-03-03 2007-09-13 Sanyo Electric Co Ltd エコー抑制装置及びエコー抑制方法
JP2009021741A (ja) * 2007-07-11 2009-01-29 Yamaha Corp エコーキャンセラ

Also Published As

Publication number Publication date
JP6422884B2 (ja) 2018-11-14
CN104871520A (zh) 2015-08-26
JP2016503262A (ja) 2016-02-01
US20140177822A1 (en) 2014-06-26
US9036814B2 (en) 2015-05-19
GB201223246D0 (en) 2013-02-06
EP2920948A1 (en) 2015-09-23
WO2014100792A1 (en) 2014-06-26
KR20150096423A (ko) 2015-08-24
EP2920948B1 (en) 2017-02-01
CN104871520B (zh) 2017-10-17
GB2509493A (en) 2014-07-09

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