KR102170341B1 - 에코 억제 기법 - Google Patents

에코 억제 기법 Download PDF

Info

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
Authority
KR
South Korea
Prior art keywords
echo
input signal
audio input
received audio
signal
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.)
Active
Application number
KR1020157016502A
Other languages
English (en)
Korean (ko)
Other versions
KR20150096423A (ko
Inventor
카르스텐 밴드보르그 소렌센
Original Assignee
마이크로소프트 테크놀로지 라이센싱, 엘엘씨
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 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 filed Critical 마이크로소프트 테크놀로지 라이센싱, 엘엘씨
Publication of KR20150096423A publication Critical patent/KR20150096423A/ko
Application granted granted Critical
Publication of KR102170341B1 publication Critical patent/KR102170341B1/ko
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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

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)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (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
GB1223246.8 2012-12-21
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
US13/889,229 US9036814B2 (en) 2012-12-21 2013-05-07 Echo suppression
US13/889,229 2013-05-07
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 (enExample)
EP (1) EP2920948B1 (enExample)
JP (1) JP6422884B2 (enExample)
KR (1) KR102170341B1 (enExample)
CN (1) CN104871520B (enExample)
GB (1) GB2509493A (enExample)
WO (1) WO2014100792A1 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108028876B (zh) * 2015-09-25 2019-07-23 美高森美半导体(美国)股份有限公司 声学回音路径改变检测装置和方法
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

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

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473686A (en) 1994-02-01 1995-12-05 Tandy Corporation Echo cancellation apparatus
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
WO2004064365A1 (en) 2003-01-08 2004-07-29 Philips Intellectual Property & Standards Gmbh Device and method for suppressing echo, in particular 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
DE602005020662D1 (de) 2004-10-13 2010-05-27 Koninkl Philips Electronics Nv Echolöschung
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
EP2048659B1 (en) 2007-10-08 2011-08-17 Harman Becker Automotive Systems GmbH Gain and spectral shape adjustment in audio signal processing
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
US9420390B2 (en) 2011-02-03 2016-08-16 Telefonaktiebolaget Lm Ericsson (Publ) Estimation and suppression of harmonic loudspeaker nonlinearities
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
GB201223246D0 (en) 2013-02-06
CN104871520B (zh) 2017-10-17
US20140177822A1 (en) 2014-06-26
CN104871520A (zh) 2015-08-26
JP2016503262A (ja) 2016-02-01
US9036814B2 (en) 2015-05-19
EP2920948A1 (en) 2015-09-23
WO2014100792A1 (en) 2014-06-26
GB2509493A (en) 2014-07-09
JP6422884B2 (ja) 2018-11-14
KR20150096423A (ko) 2015-08-24
EP2920948B1 (en) 2017-02-01

Similar Documents

Publication Publication Date Title
KR102170172B1 (ko) 에코 억제
KR102170341B1 (ko) 에코 억제 기법
KR102169993B1 (ko) 에코 억제 기법
KR102111185B1 (ko) 에코 제거
EP2987316A1 (en) Echo cancellation
KR102190833B1 (ko) 에코 억제
KR102194165B1 (ko) 에코 제거기
US9467571B2 (en) Echo removal

Legal Events

Date Code Title Description
PA0105 International application

Patent event date: 20150619

Patent event code: PA01051R01D

Comment text: International Patent Application

PG1501 Laying open of application
PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 20181128

Comment text: Request for Examination of Application

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20200110

Patent event code: PE09021S01D

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 20200720

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 20201020

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 20201020

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
PR1001 Payment of annual fee

Payment date: 20230921

Start annual number: 4

End annual number: 4

PR1001 Payment of annual fee