CA2233146C - Audio encoding apparatus and audio decoding apparatus - Google Patents
Audio encoding apparatus and audio decoding apparatus Download PDFInfo
- Publication number
- CA2233146C CA2233146C CA002233146A CA2233146A CA2233146C CA 2233146 C CA2233146 C CA 2233146C CA 002233146 A CA002233146 A CA 002233146A CA 2233146 A CA2233146 A CA 2233146A CA 2233146 C CA2233146 C CA 2233146C
- Authority
- CA
- Canada
- Prior art keywords
- pulse
- signal
- auxiliary
- audio
- positions
- 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.)
- Expired - Lifetime
Links
- 230000005236 sound signal Effects 0.000 claims abstract description 67
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 34
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 33
- 230000005284 excitation Effects 0.000 claims description 96
- 238000000034 method Methods 0.000 claims description 35
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 description 22
- 238000007792 addition Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
- G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9086663A JP3063668B2 (ja) | 1997-04-04 | 1997-04-04 | 音声符号化装置及び復号装置 |
| JP086663/1997 | 1997-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2233146A1 CA2233146A1 (en) | 1998-10-04 |
| CA2233146C true CA2233146C (en) | 2002-02-19 |
Family
ID=13893282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002233146A Expired - Lifetime CA2233146C (en) | 1997-04-04 | 1998-03-26 | Audio encoding apparatus and audio decoding apparatus |
Country Status (5)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2252170A1 (en) | 1998-10-27 | 2000-04-27 | Bruno Bessette | A method and device for high quality coding of wideband speech and audio signals |
| CN1349670A (zh) * | 1999-05-06 | 2002-05-15 | 三帝公司 | 燃料电池和薄膜 |
| US6236960B1 (en) * | 1999-08-06 | 2001-05-22 | Motorola, Inc. | Factorial packing method and apparatus for information coding |
| JP4304360B2 (ja) * | 2002-05-22 | 2009-07-29 | 日本電気株式会社 | 音声符号化復号方式間の符号変換方法および装置とその記憶媒体 |
| JP4789430B2 (ja) * | 2004-06-25 | 2011-10-12 | パナソニック株式会社 | 音声符号化装置、音声復号化装置、およびこれらの方法 |
| US8265929B2 (en) * | 2004-12-08 | 2012-09-11 | Electronics And Telecommunications Research Institute | Embedded code-excited linear prediction speech coding and decoding apparatus and method |
| ATE513290T1 (de) * | 2005-03-09 | 2011-07-15 | Ericsson Telefon Ab L M | Wenig komplexe codeerregte linearprädiktions- codierung |
| US8000967B2 (en) | 2005-03-09 | 2011-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Low-complexity code excited linear prediction encoding |
| JP5403949B2 (ja) * | 2007-03-02 | 2014-01-29 | パナソニック株式会社 | 符号化装置および符号化方法 |
| JP4871894B2 (ja) | 2007-03-02 | 2012-02-08 | パナソニック株式会社 | 符号化装置、復号装置、符号化方法および復号方法 |
| CN101622663B (zh) * | 2007-03-02 | 2012-06-20 | 松下电器产业株式会社 | 编码装置以及编码方法 |
| US7889103B2 (en) * | 2008-03-13 | 2011-02-15 | Motorola Mobility, Inc. | Method and apparatus for low complexity combinatorial coding of signals |
| JPWO2009125588A1 (ja) * | 2008-04-09 | 2011-07-28 | パナソニック株式会社 | 符号化装置および符号化方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890327A (en) * | 1987-06-03 | 1989-12-26 | Itt Corporation | Multi-rate digital voice coder apparatus |
| SE463691B (sv) | 1989-05-11 | 1991-01-07 | Ericsson Telefon Ab L M | Foerfarande att utplacera excitationspulser foer en lineaerprediktiv kodare (lpc) som arbetar enligt multipulsprincipen |
| US5060269A (en) * | 1989-05-18 | 1991-10-22 | General Electric Company | Hybrid switched multi-pulse/stochastic speech coding technique |
| US5091945A (en) * | 1989-09-28 | 1992-02-25 | At&T Bell Laboratories | Source dependent channel coding with error protection |
| US4980916A (en) * | 1989-10-26 | 1990-12-25 | General Electric Company | Method for improving speech quality in code excited linear predictive speech coding |
| US5307441A (en) * | 1989-11-29 | 1994-04-26 | Comsat Corporation | Wear-toll quality 4.8 kbps speech codec |
| US5097507A (en) * | 1989-12-22 | 1992-03-17 | General Electric Company | Fading bit error protection for digital cellular multi-pulse speech coder |
| JP3114197B2 (ja) | 1990-11-02 | 2000-12-04 | 日本電気株式会社 | 音声パラメータ符号化方法 |
| US5138661A (en) * | 1990-11-13 | 1992-08-11 | General Electric Company | Linear predictive codeword excited speech synthesizer |
| US5127053A (en) * | 1990-12-24 | 1992-06-30 | General Electric Company | Low-complexity method for improving the performance of autocorrelation-based pitch detectors |
| JP3024467B2 (ja) | 1993-12-10 | 2000-03-21 | 日本電気株式会社 | 音声符号化装置 |
| DE69426860T2 (de) * | 1993-12-10 | 2001-07-19 | Nec Corp | Sprachcodierer und Verfahren zum Suchen von Codebüchern |
| AU696092B2 (en) * | 1995-01-12 | 1998-09-03 | Digital Voice Systems, Inc. | Estimation of excitation parameters |
-
1997
- 1997-04-04 JP JP9086663A patent/JP3063668B2/ja not_active Expired - Lifetime
-
1998
- 1998-03-26 CA CA002233146A patent/CA2233146C/en not_active Expired - Lifetime
- 1998-04-01 US US09/053,606 patent/US6192334B1/en not_active Expired - Lifetime
- 1998-04-02 DE DE69837296T patent/DE69837296T2/de not_active Expired - Lifetime
- 1998-04-02 EP EP04090222A patent/EP1473710B1/en not_active Expired - Lifetime
- 1998-04-02 EP EP98250117A patent/EP0869477B1/en not_active Expired - Lifetime
- 1998-04-02 DE DE69830816T patent/DE69830816T2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6192334B1 (en) | 2001-02-20 |
| JPH10282997A (ja) | 1998-10-23 |
| DE69830816T2 (de) | 2006-04-20 |
| DE69837296T2 (de) | 2007-11-08 |
| EP0869477B1 (en) | 2005-07-13 |
| EP0869477A3 (en) | 1999-04-21 |
| CA2233146A1 (en) | 1998-10-04 |
| JP3063668B2 (ja) | 2000-07-12 |
| EP1473710B1 (en) | 2007-03-07 |
| EP0869477A2 (en) | 1998-10-07 |
| DE69837296D1 (de) | 2007-04-19 |
| EP1473710A1 (en) | 2004-11-03 |
| DE69830816D1 (de) | 2005-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2242437C (en) | Voice coding and decoding system | |
| US5778334A (en) | Speech coders with speech-mode dependent pitch lag code allocation patterns minimizing pitch predictive distortion | |
| EP0926660B1 (en) | Speech encoding/decoding method | |
| CA2233146C (en) | Audio encoding apparatus and audio decoding apparatus | |
| EP0957472B1 (en) | Speech coding apparatus and speech decoding apparatus | |
| KR20070029754A (ko) | 음성 부호화 장치 및 그 방법과, 음성 복호화 장치 및 그방법 | |
| JPH08263099A (ja) | 符号化装置 | |
| US7634402B2 (en) | Apparatus for coding of variable bitrate wideband speech and audio signals, and a method thereof | |
| JPH06250697A (ja) | 音声符号化方法及び音声符号化装置並びに音声復号化方法及び音声復号化装置 | |
| US7680669B2 (en) | Sound encoding apparatus and method, and sound decoding apparatus and method | |
| JPH0934499A (ja) | 音声符号化通信方式 | |
| US6856955B1 (en) | Voice encoding/decoding device | |
| JP3067676B2 (ja) | Ｌｓｐの予測符号化装置及び方法 | |
| EP1154407A2 (en) | Position information encoding in a multipulse speech coder | |
| JP2004348120A (ja) | 音声符号化装置、音声復号化装置及びこれらの方法 | |
| JPH11259098A (ja) | 音声符号化／復号化方法 | |
| JP2775533B2 (ja) | 音声の長期予測装置 | |
| JPH05250000A (ja) | 音声符号化制御方式 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20180326 |