BRPI0619402B8 - método de detecção de eco, e, detector de eco - Google Patents

método de detecção de eco, e, detector de eco

Info

Publication number
BRPI0619402B8
BRPI0619402B8 BRPI0619402A BRPI0619402A BRPI0619402B8 BR PI0619402 B8 BRPI0619402 B8 BR PI0619402B8 BR PI0619402 A BRPI0619402 A BR PI0619402A BR PI0619402 A BRPI0619402 A BR PI0619402A BR PI0619402 B8 BRPI0619402 B8 BR PI0619402B8
Authority
BR
Brazil
Prior art keywords
signal
echo
detection method
detector
similarity
Prior art date
Application number
BRPI0619402A
Other languages
English (en)
Inventor
Eriksson Anders
Trump Tönu
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BRPI0619402A2 publication Critical patent/BRPI0619402A2/pt
Publication of BRPI0619402B8 publication Critical patent/BRPI0619402B8/pt

Links

Classifications

    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/493—Testing echo effects or singing
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Telephone Function (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

método de detecção de eco, método para determinar a similaridade entre um primeiro sinal e um segundo sinal, detector de eco, e, aparelho para determinar a similaridade entre um primeiro sinal e um segundo sinal. um detector de eco inclui meio (34) para formar um conjunto de medidas de distância entre estimativas de frequência fundamental de um primeiro sinal e estimativas de freqüência fundamental de um segundo sinal a retardos predeterminados com respeito ao primeiro sinal. um seletor (36) seleciona uma medida de distância a partir do conjunto correspondente à similaridade mais alta entre o primeiro e segundo sinais. um classificador (32) classifica o segundo sinal como incluindo um eco, se a medida de distância selecionada possui uma relação predeterminada com um limiar de similaridade (th).
BRPI0619402A 2005-12-05 2006-11-28 método de detecção de eco, e, detector de eco BRPI0619402B8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US74190305P 2005-12-05 2005-12-05
US60/741903 2005-12-05
PCT/SE2006/001358 WO2007067125A2 (en) 2005-12-05 2006-11-28 Echo detection

Publications (2)

Publication Number Publication Date
BRPI0619402A2 BRPI0619402A2 (pt) 2011-10-04
BRPI0619402B8 true BRPI0619402B8 (pt) 2020-09-24

Family

ID=38123322

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0619402A BRPI0619402B8 (pt) 2005-12-05 2006-11-28 método de detecção de eco, e, detector de eco

Country Status (10)

Country Link
US (1) US8130940B2 (pt)
EP (1) EP1958341B1 (pt)
JP (1) JP4955696B2 (pt)
KR (1) KR101300327B1 (pt)
CN (1) CN101322323B (pt)
AU (1) AU2006323242B2 (pt)
BR (1) BRPI0619402B8 (pt)
CA (1) CA2630635C (pt)
RU (1) RU2427077C2 (pt)
WO (1) WO2007067125A2 (pt)

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* Cited by examiner, † Cited by third party
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US7809129B2 (en) * 2007-08-31 2010-10-05 Motorola, Inc. Acoustic echo cancellation based on noise environment
US20090168673A1 (en) * 2007-12-31 2009-07-02 Lampros Kalampoukas Method and apparatus for detecting and suppressing echo in packet networks
JP5167871B2 (ja) * 2008-03-05 2013-03-21 沖電気工業株式会社 伝搬遅延時間推定器、プログラム及び方法、並びにエコーキャンセラ
US8488745B2 (en) * 2009-06-17 2013-07-16 Microsoft Corporation Endpoint echo detection
US9343073B1 (en) * 2010-04-20 2016-05-17 Knowles Electronics, Llc Robust noise suppression system in adverse echo conditions
EP2444967A1 (en) 2010-10-25 2012-04-25 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Echo suppression comprising modeling of late reverberation components
US9307321B1 (en) 2011-06-09 2016-04-05 Audience, Inc. Speaker distortion reduction
JP5235226B2 (ja) * 2011-06-28 2013-07-10 日本電信電話株式会社 エコー消去装置及びそのプログラム
GB2501234A (en) * 2012-03-05 2013-10-23 Microsoft Corp Determining correlation between first and second received signals to estimate delay while a disturbance condition is present on the second signal
JP6343585B2 (ja) * 2015-05-14 2018-06-13 日本電信電話株式会社 未知伝達系推定装置、未知伝達系推定方法、およびプログラム
KR101842777B1 (ko) * 2016-07-26 2018-03-27 라인 가부시키가이샤 음질 개선 방법 및 시스템
JP6833616B2 (ja) * 2017-05-29 2021-02-24 株式会社トランストロン エコー抑圧装置、エコー抑圧方法及びエコー抑圧プログラム
CN108881652B (zh) * 2018-07-11 2021-02-26 北京大米科技有限公司 回音检测方法、存储介质和电子设备
CN113724724B (zh) * 2018-07-18 2023-10-20 谷歌有限责任公司 回波检测
KR20200024066A (ko) * 2018-08-27 2020-03-06 서강대학교산학협력단 스테레오 노이즈 제거 장치 및 스테레오 노이즈 제거 방법
CN109688284B (zh) * 2018-12-28 2021-10-08 广东美电贝尔科技集团股份有限公司 一种回音延时检测方法
CN111681667B (zh) * 2020-06-23 2021-05-04 青岛科技大学 基于自适应窗口滤波和小波阈值优化的水声信号去噪方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK140611B (da) * 1976-03-24 1979-10-08 Rovsing As Christian Apparat til detektering af ekkosignaler.
ZA95599B (en) * 1994-02-28 1996-02-06 Qualcomm Inc Doubletalk detection by means of spectral content
US6912277B1 (en) * 1997-08-29 2005-06-28 Anip, Inc. Assigning telecommunications services to matchable classes
JP3591068B2 (ja) * 1995-06-30 2004-11-17 ソニー株式会社 音声信号の雑音低減方法
JP3508978B2 (ja) * 1997-05-15 2004-03-22 日本電信電話株式会社 音楽演奏に含まれる楽器音の音源種類判別方法
US6826350B1 (en) * 1998-06-01 2004-11-30 Nippon Telegraph And Telephone Corporation High-speed signal search method device and recording medium for the same
US6226606B1 (en) * 1998-11-24 2001-05-01 Microsoft Corporation Method and apparatus for pitch tracking
US6260016B1 (en) * 1998-11-25 2001-07-10 Matsushita Electric Industrial Co., Ltd. Speech synthesis employing prosody templates
SE516143C2 (sv) * 1999-05-10 2001-11-26 Ericsson Telefon Ab L M Skattning av ren fördröjning
US6643337B1 (en) * 2000-06-02 2003-11-04 The United States Of America As Represented By The Secretary Of The Navy Codifference correlator for impulsive signals and noise
US6804203B1 (en) * 2000-09-15 2004-10-12 Mindspeed Technologies, Inc. Double talk detector for echo cancellation in a speech communication system
EP1301018A1 (en) * 2001-10-02 2003-04-09 Alcatel Apparatus and method for modifying a digital signal in the coded domain
GB0204057D0 (en) * 2002-02-21 2002-04-10 Tecteon Plc Echo detector having correlator with preprocessing
US6937723B2 (en) 2002-10-25 2005-08-30 Avaya Technology Corp. Echo detection and monitoring
JP3949150B2 (ja) * 2003-09-02 2007-07-25 日本電信電話株式会社 信号分離方法、信号分離装置、信号分離プログラム及び記録媒体
JP2005326673A (ja) 2004-05-14 2005-11-24 Nippon Telegr & Teleph Corp <Ntt> 音声認識方法、その装置およびプログラム、その記録媒体
US7852792B2 (en) * 2006-09-19 2010-12-14 Alcatel-Lucent Usa Inc. Packet based echo cancellation and suppression
EP2043278B1 (en) * 2007-09-26 2013-03-20 Psytechnics Ltd Signal processing

Also Published As

Publication number Publication date
JP4955696B2 (ja) 2012-06-20
CN101322323A (zh) 2008-12-10
CN101322323B (zh) 2013-01-23
KR20080082624A (ko) 2008-09-11
US8130940B2 (en) 2012-03-06
AU2006323242B2 (en) 2010-08-05
EP1958341A4 (en) 2014-01-01
CA2630635A1 (en) 2007-06-14
JP2009518663A (ja) 2009-05-07
US20080292109A1 (en) 2008-11-27
CA2630635C (en) 2015-04-28
WO2007067125A3 (en) 2007-08-16
AU2006323242A1 (en) 2007-06-14
KR101300327B1 (ko) 2013-08-28
WO2007067125A2 (en) 2007-06-14
RU2427077C2 (ru) 2011-08-20
EP1958341B1 (en) 2015-01-21
RU2008127412A (ru) 2010-01-20
EP1958341A2 (en) 2008-08-20
BRPI0619402A2 (pt) 2011-10-04

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04B 3/20 , G10L 21/02

Ipc: H04B 3/493 (2015.01), G10L 21/02 (2000.01)

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 23/07/2019, OBSERVADAS AS CONDICOES LEGAIS. (CO) 10 (DEZ) ANOS CONTADOS A PARTIR DE 23/07/2019, OBSERVADAS AS CONDICOES LEGAIS

B16C Correction of notification of the grant [chapter 16.3 patent gazette]

Free format text: REF. RPI 2533 DE 23/07/2019 QUANTO AO TITULAR.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 15A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2646 DE 21-09-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.