BR0317652A - Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável - Google Patents

Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável

Info

Publication number
BR0317652A
BR0317652A BR0317652-5A BR0317652A BR0317652A BR 0317652 A BR0317652 A BR 0317652A BR 0317652 A BR0317652 A BR 0317652A BR 0317652 A BR0317652 A BR 0317652A
Authority
BR
Brazil
Prior art keywords
sound signal
linear prediction
prediction
variable bit
prediction parameters
Prior art date
Application number
BR0317652-5A
Other languages
English (en)
Inventor
Milan Jelinek
Original Assignee
Nokia 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 Nokia Corp filed Critical Nokia Corp
Publication of BR0317652A publication Critical patent/BR0317652A/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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"MéTODO E DISPOSITIVO PARA QUANTIZAR OS PARâMETROS DE PREDIçãO LINEAR NA CODIFICAçãO DO SINAL DO SOM A UMA TAXA DE BIT VARIáVEL, E, MéTODO E DISPOSITIVO PARA DêS-QUANTIZAR OS PARâMETROS DE PREDIçãO LINEAR NA DECODIFICAçãO DO SINAL DO SOM A UMA TAXA DE BIT VARIáVEL". A presente invenção relaciona a um método e a um dispositivo para quantizar os parâmetros de predição linear na codificação do sinal de som de taxa de bit variável, no qual o vetor de entrada do parâmetro de predição linear é recebido, o quadro do sinal de som correspondendo ao vetor de entrada do parâmetro de predição linear é classificado, o vetor de predição é calculado, o vetor de predição calculado é removido do vetor de entrada do parâmetro de predição linear para produzir o vetor de erro de predição, e o vetor de erro de predição é quantificado. O cálculo do vetor de predição compreende selecionar um de uma pluralidade de esquemas de predição em relação à classificação do quadro do sinal de som, e processar o vetor de erro de predição através do esquema de predição selecionado. A presente invenção também relaciona a um método e a um dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal de som a uma taxa de bit variável, no qual ao menos um índice de quantização e a informação sobre a classificação do quadro de sinal de som correspondendo ao índice de quantização são recebidos, o vetor de erro de predição é recuperado ao aplicar o índice para ao menos uma tabela de quantização, o vetor de predição é reconstruído, e o vetor do parâmetro de predição linear é produzido em resposta ao vetor de erro de predição recuperado e ao vetor de predição reconstruído. A reconstrução do vetor de predição compreende processar o vetor de erro de predição recuperado através de um de uma pluralidade de esquemas de predição dependendo da informação de classificação do quadro.
BR0317652-5A 2002-12-24 2003-12-18 Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável BR0317652A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002415105A CA2415105A1 (en) 2002-12-24 2002-12-24 A method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding
PCT/CA2003/001985 WO2004059618A1 (en) 2002-12-24 2003-12-18 Method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding

Publications (1)

Publication Number Publication Date
BR0317652A true BR0317652A (pt) 2005-12-06

Family

ID=32514130

Family Applications (2)

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BR0317652-5A BR0317652A (pt) 2002-12-24 2003-12-18 Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável
BRPI0317652-5A BRPI0317652B1 (pt) 2002-12-24 2003-12-18 Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável

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BRPI0317652-5A BRPI0317652B1 (pt) 2002-12-24 2003-12-18 Método e dispositivo para quantizar os parâmetros de predição linear na codificação do sinal do som a uma taxa de bit variável, e, método e dispositivo para dês-quantizar os parâmetros de predição linear na decodificação do sinal do som a uma taxa de bit variável

Country Status (16)

Country Link
US (2) US7149683B2 (pt)
EP (1) EP1576585B1 (pt)
JP (1) JP4394578B2 (pt)
KR (1) KR100712056B1 (pt)
CN (1) CN100576319C (pt)
AT (1) ATE410771T1 (pt)
AU (1) AU2003294528A1 (pt)
BR (2) BR0317652A (pt)
CA (1) CA2415105A1 (pt)
DE (1) DE60324025D1 (pt)
HK (1) HK1082587A1 (pt)
MX (1) MXPA05006664A (pt)
MY (1) MY141174A (pt)
RU (1) RU2326450C2 (pt)
UA (1) UA83207C2 (pt)
WO (1) WO2004059618A1 (pt)

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US20050261897A1 (en) 2005-11-24
HK1082587A1 (en) 2006-06-09
CA2415105A1 (en) 2004-06-24
ATE410771T1 (de) 2008-10-15
EP1576585A1 (en) 2005-09-21
JP2006510947A (ja) 2006-03-30
AU2003294528A1 (en) 2004-07-22
UA83207C2 (ru) 2008-06-25
KR100712056B1 (ko) 2007-05-02
JP4394578B2 (ja) 2010-01-06
US7149683B2 (en) 2006-12-12
DE60324025D1 (de) 2008-11-20
MY141174A (en) 2010-03-31
EP1576585B1 (en) 2008-10-08
KR20050089071A (ko) 2005-09-07
CN1739142A (zh) 2006-02-22
RU2326450C2 (ru) 2008-06-10
BRPI0317652B1 (pt) 2018-05-22
MXPA05006664A (es) 2005-08-16
US20070112564A1 (en) 2007-05-17
CN100576319C (zh) 2009-12-30
WO2004059618A1 (en) 2004-07-15
RU2005123381A (ru) 2006-01-20
US7502734B2 (en) 2009-03-10

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