BR9813791A - Dispositivo de supressão de eco - Google Patents

Dispositivo de supressão de eco

Info

Publication number
BR9813791A
BR9813791A BR9813791-3A BR9813791A BR9813791A BR 9813791 A BR9813791 A BR 9813791A BR 9813791 A BR9813791 A BR 9813791A BR 9813791 A BR9813791 A BR 9813791A
Authority
BR
Brazil
Prior art keywords
attenuation
echo
exemplary embodiment
acoustic echo
adjusted based
Prior art date
Application number
BR9813791-3A
Other languages
English (en)
Other versions
BR9813791B1 (pt
Inventor
Eric Douglas Romesburg
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of BR9813791A publication Critical patent/BR9813791A/pt
Publication of BR9813791B1 publication Critical patent/BR9813791B1/pt

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
    • 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
    • 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

Abstract

"DISPOSITIVO DE SUPRESSãO DE ECO" Processos e aparelho para controlar supressores de eco proporcionam atenuação de eco superior, ao mesmo tempo em que otimizam a qualidade do sinal percebido sob uma variedade de condições. As técnicas divulgadas proporcionam níveis desejados de atenuação de eco, ao mesmo tempo em que minimizam a probabilidade de que um supressor de eco introduzirá mais atenuação e, desse modo, mais distorção de sinal do que é necessário. Em uma primeira concretização exemplificativa, um supressor de eco acústico é desativado, quando um detetor de atividade de voz indica que um sinal de comunicação de terminal remoto não inclui um componente de fala. Em uma segunda concretização exemplificativa, um fator de atenuação de um cancelador de eco acústico ativo é ajustado baseado em se um detetor de atividade de voz indica que um sinal de comunicação de terminal próximo inclui um componente de fala de terminal próximo. Em uma terceira concretização exemplificativa, um nível de atenuação proporcionado por um cancelador de eco acústico é ajustado com base em uma proporção de voz para ruído medida em uma entrada de aúdio para o cancelador de eco acústico.
BRPI9813791-3A 1998-01-09 1998-12-22 dispositivo de supressço de eco. BR9813791B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/005,144 US6148078A (en) 1998-01-09 1998-01-09 Methods and apparatus for controlling echo suppression in communications systems
PCT/US1998/026231 WO1999035812A1 (en) 1998-01-09 1998-12-22 Methods and apparatus for controlling echo suppression in communications systems

Publications (2)

Publication Number Publication Date
BR9813791A true BR9813791A (pt) 2000-10-03
BR9813791B1 BR9813791B1 (pt) 2013-04-16

Family

ID=21714404

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9813791-3A BR9813791B1 (pt) 1998-01-09 1998-12-22 dispositivo de supressço de eco.

Country Status (13)

Country Link
US (1) US6148078A (pt)
EP (1) EP1044558B1 (pt)
JP (1) JP2002501336A (pt)
KR (1) KR100519001B1 (pt)
CN (1) CN100502443C (pt)
AU (1) AU756390B2 (pt)
BR (1) BR9813791B1 (pt)
DE (1) DE69820118D1 (pt)
EE (1) EE200000415A (pt)
HK (1) HK1037077A1 (pt)
IL (1) IL137182A (pt)
TR (2) TR200001904T2 (pt)
WO (1) WO1999035812A1 (pt)

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US9966085B2 (en) * 2006-12-30 2018-05-08 Google Technology Holdings LLC Method and noise suppression circuit incorporating a plurality of noise suppression techniques
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JP5156043B2 (ja) * 2010-03-26 2013-03-06 株式会社東芝 音声判別装置
US8447595B2 (en) * 2010-06-03 2013-05-21 Apple Inc. Echo-related decisions on automatic gain control of uplink speech signal in a communications device
EP2679067B1 (en) 2011-02-21 2018-12-12 Empire Technology Development LLC Method and apparatus for using out-band information to improve wireless communications
US9002030B2 (en) 2012-05-01 2015-04-07 Audyssey Laboratories, Inc. System and method for performing voice activity detection
US9936290B2 (en) * 2013-05-03 2018-04-03 Qualcomm Incorporated Multi-channel echo cancellation and noise suppression
GB201308247D0 (en) * 2013-05-08 2013-06-12 Microsoft Corp Noise reduction
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CN105635379B (zh) * 2015-12-29 2020-02-14 腾讯科技（深圳）有限公司 噪声抑制方法及装置
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JP6338728B1 (ja) * 2017-03-31 2018-06-06 日本電信電話株式会社 エコーキャンセラ装置
CN107799123B (zh) * 2017-12-14 2021-07-23 南京地平线机器人技术有限公司 控制回声消除器的方法和具有回声消除功能的装置
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JP7187183B2 (ja) * 2018-06-14 2022-12-12 株式会社トランストロン エコー抑圧装置、エコー抑圧方法およびエコー抑圧プログラム
CN111917926B (zh) * 2019-05-09 2021-08-06 上海触乐信息科技有限公司 一种通信终端中的回声消除方法、装置及终端设备
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CN111583087B (zh) * 2020-05-06 2023-09-05 杭州小影创新科技股份有限公司 一种图像去水印方法
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Also Published As

Publication number Publication date
TR200100647T2 (tr) 2002-06-21
EE200000415A (et) 2001-12-17
EP1044558B1 (en) 2003-11-26
BR9813791B1 (pt) 2013-04-16
KR20010033951A (ko) 2001-04-25
HK1037077A1 (en) 2002-01-25
IL137182A (en) 2004-09-27
JP2002501336A (ja) 2002-01-15
WO1999035812A1 (en) 1999-07-15
EP1044558A1 (en) 2000-10-18
CN100502443C (zh) 2009-06-17
US6148078A (en) 2000-11-14
IL137182A0 (en) 2001-07-24
CN1294814A (zh) 2001-05-09
AU756390B2 (en) 2003-01-09
DE69820118D1 (de) 2004-01-08
AU1907799A (en) 1999-07-26
TR200001904T2 (tr) 2000-11-21
KR100519001B1 (ko) 2005-10-06

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 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 16/04/2013, OBSERVADAS AS CONDICOES LEGAIS.

B25A Requested transfer of rights approved
B25A Requested transfer of rights approved
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 21A 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 2545 DE 15-10-2019 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.