CA2283203A1 - Procede et dispositif de codage a retard parametral et procede de preparation de table de codage - Google Patents

Procede et dispositif de codage a retard parametral et procede de preparation de table de codage Download PDF

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Publication number
CA2283203A1
CA2283203A1 CA002283203A CA2283203A CA2283203A1 CA 2283203 A1 CA2283203 A1 CA 2283203A1 CA 002283203 A CA002283203 A CA 002283203A CA 2283203 A CA2283203 A CA 2283203A CA 2283203 A1 CA2283203 A1 CA 2283203A1
Authority
CA
Canada
Prior art keywords
lag
codebook
lag parameter
decoded
distortion
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002283203A
Other languages
English (en)
Inventor
Koji Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2283203A1 publication Critical patent/CA2283203A1/fr
Abandoned legal-status Critical Current

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Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00Speech synthesis; Text to speech systems
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/005Correction of errors induced by the transmission channel, if related to the coding algorithm
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L2019/0001Codebooks
    • G10L2019/0007Codebook element generation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L2019/0001Codebooks
    • G10L2019/0011Long term prediction filters, i.e. pitch estimation

Landscapes

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

Abstract

L'invention porte sur un codeur (215b) à retard paramétral qui génère un code correspondant à une valeur de paramètre de retard à l'aide d'une table de codage (215a). Du côté décodage, une valeur de paramètre de retard, correspondant au code du paramètre de retard généré sur la partie décodage, est décodée et émise par la même table de codage 215 (a). Dans la table de codage (215a) à retard paramètral, est affichée la relation entre la valeur de paramètre de retard et le code (P) correspondant. La relation est ainsi déterminée de façon à augmenter le taux avec lequel la valeur de paramètre de retard décodée, lorsque se produit une erreur binaire dans le code, dévie approximativement vers un multiple entier (y compris une fois) ou un sous-multiple entier de la secon
CA002283203A 1998-01-27 1999-01-26 Procede et dispositif de codage a retard parametral et procede de preparation de table de codage Abandoned CA2283203A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10/29332 1998-01-27
JP2933298 1998-01-27
PCT/JP1999/000294 WO1999038157A1 (fr) 1998-01-27 1999-01-26 Procede et dispositif de codage a retard parametral et procede de preparation de table de codage

Publications (1)

Publication Number Publication Date
CA2283203A1 true CA2283203A1 (fr) 1999-07-29

Family

ID=12273290

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002283203A Abandoned CA2283203A1 (fr) 1998-01-27 1999-01-26 Procede et dispositif de codage a retard parametral et procede de preparation de table de codage

Country Status (6)

Country Link
EP (1) EP0971338A1 (fr)
KR (1) KR20010005669A (fr)
CN (1) CN1256001A (fr)
AU (1) AU2075199A (fr)
CA (1) CA2283203A1 (fr)
WO (1) WO1999038157A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8793557B2 (en) 2011-05-19 2014-07-29 Cambrige Silicon Radio Limited Method and apparatus for real-time multidimensional adaptation of an audio coding system
US8819523B2 (en) * 2011-05-19 2014-08-26 Cambridge Silicon Radio Limited Adaptive controller for a configurable audio coding system
CN103474075B (zh) * 2013-08-19 2016-12-28 科大讯飞股份有限公司 语音信号发送方法及系统、接收方法及系统
WO2019021552A1 (fr) * 2017-07-25 2019-01-31 日本電信電話株式会社 Dispositif de codage, dispositif de décodage, structure de données de chaîne de code, procédé de codage, procédé de décodage, programme de codage et programme de décodage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3250367B2 (ja) * 1994-04-15 2002-01-28 松下電器産業株式会社 符号化信号復号化方法及びその装置
JPH09261070A (ja) * 1996-03-22 1997-10-03 Sony Corp ディジタルオーディオ信号処理装置
JPH10200580A (ja) * 1997-01-16 1998-07-31 Matsushita Electric Ind Co Ltd 音声パケット再生方法
JP3287543B2 (ja) * 1997-01-24 2002-06-04 日本電信電話株式会社 誤り訂正符号化方法および復号化方法

Also Published As

Publication number Publication date
AU2075199A (en) 1999-08-09
EP0971338A1 (fr) 2000-01-12
WO1999038157A1 (fr) 1999-07-29
CN1256001A (zh) 2000-06-07
KR20010005669A (ko) 2001-01-15

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued
FZDE Discontinued

Effective date: 20040126