BRPI0610909A2 - codificador/decodificador de voz em sub-bandas com dicionÁrios de càdigos multiestÁgios e codificaÇço redundante - Google Patents

codificador/decodificador de voz em sub-bandas com dicionÁrios de càdigos multiestÁgios e codificaÇço redundante

Info

Publication number
BRPI0610909A2
BRPI0610909A2 BRPI0610909-8A BRPI0610909A BRPI0610909A2 BR PI0610909 A2 BRPI0610909 A2 BR PI0610909A2 BR PI0610909 A BRPI0610909 A BR PI0610909A BR PI0610909 A2 BRPI0610909 A2 BR PI0610909A2
Authority
BR
Brazil
Prior art keywords
coded
decoding
information
decoder
coded unit
Prior art date
Application number
BRPI0610909-8A
Other languages
English (en)
Inventor
Tian Wang
Kazuhito Koishida
Hosam A Khalil
Xiaoquin Sun
Wei-Ge Chen
Original Assignee
Microsoft Corp
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 Microsoft Corp filed Critical Microsoft Corp
Publication of BRPI0610909A2 publication Critical patent/BRPI0610909A2/pt

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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
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereophonic System (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

CODIFICADOR/DECODIFICADOR DE VOZ EM SUB-BANDAS COM DICIONÁRIOS DE CàDIGOS MULTIESTAGIOS E CODIFICAÇçO REDUNDANTE. São descritas técnicas e ferramentas relacionadas à codificação e decodificação de informações de áudio. Por exemplo, as informações codificadas redundantes para decodificar um quadro atual incluem informações de histórico de sinal associadas a apenas uma parte de um quadro anterior. Como outro exemplo, as informações redundantes codificadas para a decodificação de uma unidade codificada incluem parâmetros para um estágio de dicionário de códigos a ser usado na decodificação da unidade codificada atual apenas se a unidade anterior codificada não estiver disponível. Como ainda outro exemplo, cada uma das unidades de áudio codificadas inclui um campo indicando se a unidade codificada inclui informações principais codificadas representando um segmento de um sinal de áudio, e se a unidade codificada inclui informações redundantes codificadas para uso na decodificação das informações principais codificadas.
BRPI0610909-8A 2005-05-31 2006-04-05 codificador/decodificador de voz em sub-bandas com dicionÁrios de càdigos multiestÁgios e codificaÇço redundante BRPI0610909A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/142,605 US7177804B2 (en) 2005-05-31 2005-05-31 Sub-band voice codec with multi-stage codebooks and redundant coding
PCT/US2006/012686 WO2006130229A1 (en) 2005-05-31 2006-04-05 Sub-band voice codec with multi-stage codebooks and redundant coding

Publications (1)

Publication Number Publication Date
BRPI0610909A2 true BRPI0610909A2 (pt) 2008-12-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0610909-8A BRPI0610909A2 (pt) 2005-05-31 2006-04-05 codificador/decodificador de voz em sub-bandas com dicionÁrios de càdigos multiestÁgios e codificaÇço redundante

Country Status (19)

Country Link
US (4) US7177804B2 (pt)
EP (2) EP1886306B1 (pt)
JP (2) JP5123173B2 (pt)
KR (1) KR101238583B1 (pt)
CN (2) CN101189662B (pt)
AT (1) ATE492014T1 (pt)
AU (1) AU2006252965B2 (pt)
BR (1) BRPI0610909A2 (pt)
CA (1) CA2611829C (pt)
DE (1) DE602006018908D1 (pt)
ES (1) ES2358213T3 (pt)
HK (1) HK1123621A1 (pt)
IL (1) IL187196A (pt)
NO (1) NO339287B1 (pt)
NZ (1) NZ563462A (pt)
PL (1) PL1886306T3 (pt)
RU (1) RU2418324C2 (pt)
TW (1) TWI413107B (pt)
WO (1) WO2006130229A1 (pt)

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