BR9915576A - Métodos de conservação da informação de não fala perceptivelmente relevante em um sinal de áudio durante a codificação do sinal de áudio e de conservação da informação perceptivelmente relevante em um sinal de áudio, e, aparelho para uso em um codificador de sinal de áudio. - Google Patents

Métodos de conservação da informação de não fala perceptivelmente relevante em um sinal de áudio durante a codificação do sinal de áudio e de conservação da informação perceptivelmente relevante em um sinal de áudio, e, aparelho para uso em um codificador de sinal de áudio.

Info

Publication number
BR9915576A
BR9915576A BR9915576-1A BR9915576A BR9915576A BR 9915576 A BR9915576 A BR 9915576A BR 9915576 A BR9915576 A BR 9915576A BR 9915576 A BR9915576 A BR 9915576A
Authority
BR
Brazil
Prior art keywords
audio signal
perceptually relevant
encoding
speech
methods
Prior art date
Application number
BR9915576-1A
Other languages
English (en)
Other versions
BR9915576B1 (pt
Inventor
Jonas Svedberg
Erik Ekudden
Anders Uvliden
Ingemar Johansson
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26807081&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9915576(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9915576A publication Critical patent/BR9915576A/pt
Publication of BR9915576B1 publication Critical patent/BR9915576B1/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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

"MéTODOS DE CONSERVAçãO DA INFORMAçãO DE NãO FALA PERCEPTIVELMENTE RELEVANTE EM UM SINAL DE áUDIO DURANTE A CODIFICAçãO DO SINAL DE áUDIO E DE CONSERVAçãO DA INFORMAçãO PERCEPTIVELMENTE RELEVANTE EM UM SINAL DE áUDIO, E, APARELHO PARA USO EM UM CODIFICADOR DE SINAL DE áUDIO" Informação de não fala perceptivelmente relevante pode ser conservada durante a codificação de um sinal de áudio pela determinação de se o sinal de áudio inclui tal informação (122, 124, 125). Se for assim, uma classificação de fala/ruído do sinal de áudio é eliminada (43) para impedir a classificação errada do sinal de áudio como ruído.
BRPI9915576-1A 1998-11-23 1999-11-12 mÉtodos de conservaÇço da informaÇço de nço fala perceptivelmente relevante em um sinal de Áudio durante a codificaÇço do sinal de Áudio e de conservaÇço da informaÇço perceptivelmente relevante em um sinal de Áudio, e, aparelho para uso em um codificador de sinal de Áudio. BR9915576B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10955698P 1998-11-23 1998-11-23
US09/434,787 US6424938B1 (en) 1998-11-23 1999-11-05 Complex signal activity detection for improved speech/noise classification of an audio signal
PCT/SE1999/002073 WO2000031720A2 (en) 1998-11-23 1999-11-12 Complex signal activity detection for improved speech/noise classification of an audio signal

Publications (2)

Publication Number Publication Date
BR9915576A true BR9915576A (pt) 2001-08-14
BR9915576B1 BR9915576B1 (pt) 2013-04-16

Family

ID=26807081

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9915576-1A BR9915576B1 (pt) 1998-11-23 1999-11-12 mÉtodos de conservaÇço da informaÇço de nço fala perceptivelmente relevante em um sinal de Áudio durante a codificaÇço do sinal de Áudio e de conservaÇço da informaÇço perceptivelmente relevante em um sinal de Áudio, e, aparelho para uso em um codificador de sinal de Áudio.

Country Status (15)

Country Link
US (1) US6424938B1 (pt)
EP (1) EP1224659B1 (pt)
JP (1) JP4025018B2 (pt)
KR (1) KR100667008B1 (pt)
CN (2) CN1828722B (pt)
AR (1) AR030386A1 (pt)
AU (1) AU763409B2 (pt)
BR (1) BR9915576B1 (pt)
CA (1) CA2348913C (pt)
DE (1) DE69925168T2 (pt)
HK (1) HK1097080A1 (pt)
MY (1) MY124630A (pt)
RU (1) RU2251750C2 (pt)
WO (1) WO2000031720A2 (pt)
ZA (1) ZA200103150B (pt)

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Also Published As

Publication number Publication date
AU1593800A (en) 2000-06-13
WO2000031720A3 (en) 2002-03-21
JP4025018B2 (ja) 2007-12-19
BR9915576B1 (pt) 2013-04-16
EP1224659A2 (en) 2002-07-24
ZA200103150B (en) 2002-06-26
JP2002540441A (ja) 2002-11-26
CA2348913A1 (en) 2000-06-02
AR030386A1 (es) 2003-08-20
WO2000031720A2 (en) 2000-06-02
DE69925168T2 (de) 2006-02-16
HK1097080A1 (en) 2007-06-15
US6424938B1 (en) 2002-07-23
EP1224659B1 (en) 2005-05-04
KR100667008B1 (ko) 2007-01-10
MY124630A (en) 2006-06-30
CN1828722A (zh) 2006-09-06
CA2348913C (en) 2009-09-15
CN1419687A (zh) 2003-05-21
RU2251750C2 (ru) 2005-05-10
DE69925168D1 (de) 2005-06-09
AU763409B2 (en) 2003-07-24
CN1257486C (zh) 2006-05-24
CN1828722B (zh) 2010-05-26
KR20010078401A (ko) 2001-08-20

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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.