BRPI9709148B8 - aparelho para processamento não-linear em um sistema de comunicações - Google Patents

aparelho para processamento não-linear em um sistema de comunicações

Info

Publication number
BRPI9709148B8
BRPI9709148B8 BRPI9709148A BR9709148A BRPI9709148B8 BR PI9709148 B8 BRPI9709148 B8 BR PI9709148B8 BR PI9709148 A BRPI9709148 A BR PI9709148A BR 9709148 A BR9709148 A BR 9709148A BR PI9709148 B8 BRPI9709148 B8 BR PI9709148B8
Authority
BR
Brazil
Prior art keywords
suppression system
noise
control signal
noise suppression
nonlinear processing
Prior art date
Application number
BRPI9709148A
Other languages
English (en)
Other versions
BR9709148B1 (pt
BR9709148A (pt
Inventor
James P Ashley
Lee M Proctor
Original Assignee
Motorola Mobility Inc
Motorola Solutions Inc
Motorola 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 Motorola Mobility Inc, Motorola Solutions Inc, Motorola Inc filed Critical Motorola Mobility Inc
Publication of BR9709148A publication Critical patent/BR9709148A/pt
Publication of BR9709148B1 publication Critical patent/BR9709148B1/pt
Publication of BRPI9709148B8 publication Critical patent/BRPI9709148B8/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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)

Abstract

<b>aparelho e processo para processamento não-linear em um sistema de comunicações<d>. um processador não-linear aperfeiçoado utilizado em cancelamento de eco elimina uma fonte de ruído de conforto (214) e em vez disso introduz um sinal de controle (224) diretamente em um sistema de supressão de ruído (403). o sistema de supressão de ruído (403) usa o sinal de controle (224) para inibir a atualização iterativa da estimativa de ruído de fundo quando o sinal de controle (224) está ativo, o que impede que qualquer eco residual influente a estimativa de ruído fornecido pelo sistema de supressão de ruído (403). além disso, o sinal de controle (224) é utilizado por um calculador de ganho (533) dentro do sistema de supressão de ruído (403) para atenuar cada faixa de frequência até o máximo permissível mais a razão entre sinal-ruído (snr) de canal residual atual. dependendo da implementação, o sistema de supressão de ruído (403) modela o ruído de fundo ou de um usuário do pstn ou de um usuário de uma estação móvel.
BRPI9709148A 1997-01-23 1997-11-04 aparelho para processamento não-linear em um sistema de comunicações BRPI9709148B8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78806197A 1997-01-23 1997-01-23
PCT/US1997/020079 WO1998033311A1 (en) 1997-01-23 1997-11-04 Apparatus and method for non-linear processing in a communication system

Publications (3)

Publication Number Publication Date
BR9709148A BR9709148A (pt) 1999-08-03
BR9709148B1 BR9709148B1 (pt) 2013-10-29
BRPI9709148B8 true BRPI9709148B8 (pt) 2016-05-31

Family

ID=25143329

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9709148A BRPI9709148B8 (pt) 1997-01-23 1997-11-04 aparelho para processamento não-linear em um sistema de comunicações

Country Status (9)

Country Link
EP (1) EP0895688B1 (pt)
JP (1) JP4261622B2 (pt)
KR (1) KR20000064767A (pt)
CN (1) CN100361485C (pt)
BR (1) BRPI9709148B8 (pt)
CA (1) CA2247429C (pt)
DE (1) DE69735275T2 (pt)
IL (1) IL124578A0 (pt)
WO (1) WO1998033311A1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6658107B1 (en) * 1998-10-23 2003-12-02 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for providing echo suppression using frequency domain nonlinear processing
DE19935808A1 (de) * 1999-07-29 2001-02-08 Ericsson Telefon Ab L M Echounterdrückungseinrichtung zum Unterdrücken von Echos in einer Sender/Empfänger-Einheit
US6507653B1 (en) 2000-04-14 2003-01-14 Ericsson Inc. Desired voice detection in echo suppression
AU2001259273A1 (en) * 2000-05-18 2001-11-26 Ericsson Inc. Noise-adaptive communications signal gain
JP4580508B2 (ja) * 2000-05-31 2010-11-17 株式会社東芝 信号処理装置及び通信装置
US7027591B2 (en) 2002-10-16 2006-04-11 Ericsson Inc. Integrated noise cancellation and residual echo suppression
US7133825B2 (en) 2003-11-28 2006-11-07 Skyworks Solutions, Inc. Computationally efficient background noise suppressor for speech coding and speech recognition
JP4594960B2 (ja) * 2007-05-18 2010-12-08 日本電信電話株式会社 背景雑音補間装置、背景雑音補間方法
CN102136271B (zh) * 2011-02-09 2012-07-04 华为技术有限公司 舒适噪声生成器、方法及回声抵消装置
US8804977B2 (en) 2011-03-18 2014-08-12 Dolby Laboratories Licensing Corporation Nonlinear reference signal processing for echo suppression
CN105872156B (zh) * 2016-05-25 2019-02-12 腾讯科技（深圳）有限公司 一种回声时延跟踪方法及装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783803A (en) * 1985-11-12 1988-11-08 Dragon Systems, Inc. Speech recognition apparatus and method
US4811404A (en) * 1987-10-01 1989-03-07 Motorola, Inc. Noise suppression system
FR2651077B1 (fr) * 1989-08-18 1994-06-10 Letourneur Gregoire Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique
US5305309A (en) * 1989-12-06 1994-04-19 Fujitsu Limited Echo canceller
GB2245459A (en) * 1990-06-20 1992-01-02 Motorola Inc Echo canceller with adaptive voice switch attenuation
ATE477571T1 (de) * 1991-06-11 2010-08-15 Qualcomm Inc Vocoder mit veränderlicher bitrate
US5295136A (en) * 1992-04-13 1994-03-15 Motorola, Inc. Method of performing convergence in a, least mean square, adaptive filter, echo canceller
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5613037A (en) * 1993-12-21 1997-03-18 Lucent Technologies Inc. Rejection of non-digit strings for connected digit speech recognition
US5535194A (en) * 1994-07-14 1996-07-09 Motorola, Inc. Method and apparatus for echo canceling with double-talk immunity
JP2928130B2 (ja) * 1995-04-19 1999-08-03 埼玉日本電気株式会社 ハンズフリー通信装置

Also Published As

Publication number Publication date
CA2247429A1 (en) 1998-07-30
WO1998033311A1 (en) 1998-07-30
DE69735275D1 (de) 2006-04-20
KR20000064767A (ko) 2000-11-06
BR9709148B1 (pt) 2013-10-29
EP0895688B1 (en) 2006-02-15
CA2247429C (en) 2002-01-01
CN100361485C (zh) 2008-01-09
BR9709148A (pt) 1999-08-03
JP2000507432A (ja) 2000-06-13
CN1214171A (zh) 1999-04-14
JP4261622B2 (ja) 2009-04-30
IL124578A0 (en) 1999-01-26
EP0895688A4 (en) 2001-11-07
DE69735275T2 (de) 2006-07-27
EP0895688A1 (en) 1999-02-10

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: ALTERADA A CLASSIFICACAO DE A01B 69/00 PARA INT. CL 2011.01 H04M 1/60; H04M 9/00; H04B 3/23

Ipc: H04M 1/60 (2011.01), H04M 9/00 (2011.01), H04B 3/2

B25D Requested change of name of applicant approved

Owner name: MOTOROLA SOLUTIONS, INC. (US)

B25A Requested transfer of rights approved

Owner name: MOTOROLA MOBILITY, INC. (US)

B25G Requested change of headquarter approved

Owner name: MOTOROLA MOBILITY, INC. (US)

B25F Entry of change of name and/or headquarter and transfer of application, patent and certif. of addition of invention: change of name on requirement

Owner name: MOTOROLA MOBILITY, INC. (US)

Free format text: A FIM DE ATENDER A ALTERACAO DE NOME REQUERIDA ATRAVES DA PETICAO NO 20130025909/RJ, DE 28/03/2013, E NECESSARIO APRESENTAR O DOCUMENTO COM A DEVIDA LEGALIZACAO CONSULAR, GUIA RELATIVA A ESSE SEGUNDO SERVICO SOLICITADO, ALEM DA GUIA DE CUMPRIMENTO DE EXIGENCIA.

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B25E Requested change of name of applicant rejected

Free format text: INDEFERIDO(S) O(S) PEDIDO(S) DE ALTERACAO(OES) DE NOME CONTIDO(S) NA PETICAO NO 020130025909-RJ, DE 28/03/2013, POR AUSENCIA DE CUMPRIMENTO DA EXIGENCIA PUBLICADA NA RPI NO 2219, DE 16/07/2013.

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 29/10/2013, OBSERVADAS AS CONDICOES LEGAIS.

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

Free format text: REFERENTE A PUBLICACAO NA RPI 2234 DE 29/10/2013 QUANTO AO TITULAR E ENDERECO DO INVENTOR.

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

Free format text: REFERENTE A 19A 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 2386 DE 27-09-2016 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.

B25B Requested transfer of rights rejected
B25E Requested change of name of applicant rejected