CA2121667A1 - Excitation a codage par transformation differentiel pour le codage de paroles et le codage audio - Google Patents
Excitation a codage par transformation differentiel pour le codage de paroles et le codage audioInfo
- Publication number
- CA2121667A1 CA2121667A1 CA 2121667 CA2121667A CA2121667A1 CA 2121667 A1 CA2121667 A1 CA 2121667A1 CA 2121667 CA2121667 CA 2121667 CA 2121667 A CA2121667 A CA 2121667A CA 2121667 A1 CA2121667 A1 CA 2121667A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- quantization
- sound signal
- transform
- spectral
- 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
- 230000005284 excitation Effects 0.000 title claims abstract description 22
- 238000013139 quantization Methods 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 51
- 230000003595 spectral effect Effects 0.000 claims abstract description 33
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 230000005236 sound signal Effects 0.000 claims description 39
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 230000002441 reversible effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 6
- 238000013459 approach Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000010924 continuous production Methods 0.000 abstract description 4
- 206010035148 Plague Diseases 0.000 abstract description 3
- 241000607479 Yersinia pestis Species 0.000 abstract description 3
- 238000009432 framing Methods 0.000 abstract description 3
- 230000001131 transforming effect Effects 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000545744 Hirudinea Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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
- G10L19/02—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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (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)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2121667 CA2121667A1 (fr) | 1994-04-19 | 1994-04-19 | Excitation a codage par transformation differentiel pour le codage de paroles et le codage audio |
| PCT/CA1995/000216 WO1995028699A1 (fr) | 1994-04-19 | 1995-04-18 | Excitation a codage par transformation-differentielle pour codage de signaux audio et vocaux |
| AU22509/95A AU2250995A (en) | 1994-04-19 | 1995-04-18 | Differential-transform-coded excitation for speech and audio coding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2121667 CA2121667A1 (fr) | 1994-04-19 | 1994-04-19 | Excitation a codage par transformation differentiel pour le codage de paroles et le codage audio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2121667A1 true CA2121667A1 (fr) | 1995-10-20 |
Family
ID=4153411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2121667 Abandoned CA2121667A1 (fr) | 1994-04-19 | 1994-04-19 | Excitation a codage par transformation differentiel pour le codage de paroles et le codage audio |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2250995A (fr) |
| CA (1) | CA2121667A1 (fr) |
| WO (1) | WO1995028699A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1386310A1 (fr) * | 2001-05-11 | 2004-02-04 | Matsushita Electric Industrial Co., Ltd. | Dispositif de codage, decodage et diffusion d'un signal audio a l'aide d'informations spectrales de petite taille |
| CN101086845B (zh) * | 2006-06-08 | 2011-06-01 | 北京天籁传音数字技术有限公司 | 声音编码装置及方法以及声音解码装置及方法 |
| CN100583649C (zh) | 2007-07-23 | 2010-01-20 | 华为技术有限公司 | 矢量编/解码方法、装置及流媒体播放器 |
| ATE500588T1 (de) | 2008-01-04 | 2011-03-15 | Dolby Sweden Ab | Audiokodierer und -dekodierer |
| EP3079153B1 (fr) | 2010-07-02 | 2018-08-01 | Dolby International AB | Décodage audio avec post-filtrage sélectif |
| CN103366751B (zh) * | 2012-03-28 | 2015-10-14 | 北京天籁传音数字技术有限公司 | 一种声音编解码装置及其方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4907276A (en) * | 1988-04-05 | 1990-03-06 | The Dsp Group (Israel) Ltd. | Fast search method for vector quantizer communication and pattern recognition systems |
| US5206884A (en) * | 1990-10-25 | 1993-04-27 | Comsat | Transform domain quantization technique for adaptive predictive coding |
| US5765127A (en) * | 1992-03-18 | 1998-06-09 | Sony Corp | High efficiency encoding method |
-
1994
- 1994-04-19 CA CA 2121667 patent/CA2121667A1/fr not_active Abandoned
-
1995
- 1995-04-18 AU AU22509/95A patent/AU2250995A/en not_active Abandoned
- 1995-04-18 WO PCT/CA1995/000216 patent/WO1995028699A1/fr active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995028699A1 (fr) | 1995-10-26 |
| AU2250995A (en) | 1995-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |