BR0208635A - Método e aparelho para quantificar os valores do parâmetro espectral no codificador de voz, codificador de voz para fornecer ao decodificador um fluxo de bit, e, estação móvel capaz de receber e pré-processar o sinal de voz de entrada - Google Patents

Método e aparelho para quantificar os valores do parâmetro espectral no codificador de voz, codificador de voz para fornecer ao decodificador um fluxo de bit, e, estação móvel capaz de receber e pré-processar o sinal de voz de entrada

Info

Publication number
BR0208635A
BR0208635A BR0208635-2A BR0208635A BR0208635A BR 0208635 A BR0208635 A BR 0208635A BR 0208635 A BR0208635 A BR 0208635A BR 0208635 A BR0208635 A BR 0208635A
Authority
BR
Brazil
Prior art keywords
lsf
voice
voice coder
decoder
mobile station
Prior art date
Application number
BR0208635-2A
Other languages
English (en)
Inventor
Anssi Rom
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 BR0208635A publication Critical patent/BR0208635A/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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"MéTODO E APARELHO PARA QUANTIFICAR OS VALORES DO PARAMETRO ESPECTRAL NO CODIFICADOR DE VOZ, CODIFICADOR DE VOZ PARA FORNECER AO DECODIFICADOR UM FLUXO DE BIT, E, ESTAçãO MóVEL CAPAZ DE RECEBER E PRé-PROCESSAR O SINAL DE VOZ DE ENTRADA". Método e sistema para quantificar os vetores LSF no codificador de voz, onde os valores LSF preditos baseados nos valores de saída previamente decodificados são usados para estimar a distorção espectral, juntamente com os vetores do livro-código residuais e os coeficientes LSF. O método compreende os passos de obter uma pluralidade de coeficientes LSF quantizados dos respectivos valores LSF preditos e dos vetores de livro-código residuais; re-dispor os coeficientes LSF quantificados no domínio da freq³ência em uma sessão ordenada; obter a distorção espectral dos coeficientes LSF quantificados re-dispostos e os respectivos coeficientes LSF; e um vetor de código ótimo é selecionado baseado na distorção espectral.
BR0208635-2A 2001-05-16 2002-05-10 Método e aparelho para quantificar os valores do parâmetro espectral no codificador de voz, codificador de voz para fornecer ao decodificador um fluxo de bit, e, estação móvel capaz de receber e pré-processar o sinal de voz de entrada BR0208635A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/859,225 US7003454B2 (en) 2001-05-16 2001-05-16 Method and system for line spectral frequency vector quantization in speech codec
PCT/IB2002/001608 WO2002093551A2 (en) 2001-05-16 2002-05-10 Method and system for line spectral frequency vector quantization in speech codec

Publications (1)

Publication Number Publication Date
BR0208635A true BR0208635A (pt) 2004-03-30

Family

ID=25330384

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0208635-2A BR0208635A (pt) 2001-05-16 2002-05-10 Método e aparelho para quantificar os valores do parâmetro espectral no codificador de voz, codificador de voz para fornecer ao decodificador um fluxo de bit, e, estação móvel capaz de receber e pré-processar o sinal de voz de entrada

Country Status (11)

Country Link
US (1) US7003454B2 (pt)
EP (1) EP1388144B1 (pt)
JP (1) JP2004526213A (pt)
KR (1) KR20040028750A (pt)
CN (1) CN1241170C (pt)
AU (1) AU2002302874A1 (pt)
BR (1) BR0208635A (pt)
CA (1) CA2443443C (pt)
ES (1) ES2649237T3 (pt)
PT (1) PT1388144T (pt)
WO (1) WO2002093551A2 (pt)

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KR101821532B1 (ko) * 2012-07-12 2018-03-08 노키아 테크놀로지스 오와이 벡터 양자화
CN102867516B (zh) * 2012-09-10 2014-08-27 大连理工大学 一种采用高阶线性预测系数分组矢量量化的语音编解方法
CN102903365B (zh) * 2012-10-30 2014-05-14 山东省计算中心 一种在解码端细化窄带声码器参数的方法
CN104517610B (zh) * 2013-09-26 2018-03-06 华为技术有限公司 频带扩展的方法及装置
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Also Published As

Publication number Publication date
CA2443443C (en) 2012-10-02
AU2002302874A1 (en) 2002-11-25
PT1388144T (pt) 2017-12-01
EP1388144A2 (en) 2004-02-11
WO2002093551A2 (en) 2002-11-21
US7003454B2 (en) 2006-02-21
KR20040028750A (ko) 2004-04-03
EP1388144B1 (en) 2017-10-18
WO2002093551A3 (en) 2003-05-01
CA2443443A1 (en) 2002-11-21
ES2649237T3 (es) 2018-01-11
EP1388144A4 (en) 2007-08-08
CN1509469A (zh) 2004-06-30
CN1241170C (zh) 2006-02-08
US20030014249A1 (en) 2003-01-16
JP2004526213A (ja) 2004-08-26

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B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]