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 PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims description 56
- 238000004891 communication Methods 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 description 19
- 230000005284 excitation Effects 0.000 description 11
- 239000013598 vector Substances 0.000 description 9
- 230000003044 adaptive effect Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 206010021403 Illusion Diseases 0.000 description 1
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
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- 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
- G10L13/00—Speech synthesis; Text to speech systems
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- 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
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- 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
- G10L2019/0001—Codebooks
- G10L2019/0007—Codebook element generation
-
- 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
- G10L2019/0011—Long 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
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)
| 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)
| 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 |
-
1999
- 1999-01-26 KR KR1019997008737A patent/KR20010005669A/ko active IP Right Grant
- 1999-01-26 EP EP99901171A patent/EP0971338A1/fr not_active Withdrawn
- 1999-01-26 AU AU20751/99A patent/AU2075199A/en not_active Abandoned
- 1999-01-26 WO PCT/JP1999/000294 patent/WO1999038157A1/fr not_active Application Discontinuation
- 1999-01-26 CA CA002283203A patent/CA2283203A1/fr not_active Abandoned
- 1999-01-26 CN CN99800072A patent/CN1256001A/zh active Pending
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 |