CA2504174A1 - Transcodeur et procede de conversion par codeur - Google Patents
Transcodeur et procede de conversion par codeur Download PDFInfo
- Publication number
- CA2504174A1 CA2504174A1 CA002504174A CA2504174A CA2504174A1 CA 2504174 A1 CA2504174 A1 CA 2504174A1 CA 002504174 A CA002504174 A CA 002504174A CA 2504174 A CA2504174 A CA 2504174A CA 2504174 A1 CA2504174 A1 CA 2504174A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- output
- unit
- voiced
- gain
- 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 abstract description 124
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 79
- 238000001228 spectrum Methods 0.000 claims abstract description 92
- 238000005070 sampling Methods 0.000 claims abstract description 41
- 230000015572 biosynthetic process Effects 0.000 claims description 82
- 238000003786 synthesis reaction Methods 0.000 claims description 82
- 230000003044 adaptive effect Effects 0.000 claims description 57
- 230000000737 periodic effect Effects 0.000 claims description 37
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 21
- 238000005311 autocorrelation function Methods 0.000 claims description 16
- 238000011045 prefiltration Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 abstract description 23
- 238000010586 diagram Methods 0.000 description 11
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000001308 synthesis method 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
- G10L19/04—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
- G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002-317204 | 2002-10-31 | ||
| JP2002317204A JP4438280B2 (ja) | 2002-10-31 | 2002-10-31 | トランスコーダ及び符号変換方法 |
| PCT/JP2003/012859 WO2004040552A1 (fr) | 2002-10-31 | 2003-10-08 | Transcodeur et procede de conversion par codeur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2504174A1 true CA2504174A1 (fr) | 2004-05-13 |
Family
ID=32211714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002504174A Abandoned CA2504174A1 (fr) | 2002-10-31 | 2003-10-08 | Transcodeur et procede de conversion par codeur |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1564723B1 (fr) |
| JP (1) | JP4438280B2 (fr) |
| KR (1) | KR100715014B1 (fr) |
| CN (1) | CN100498933C (fr) |
| AU (1) | AU2003271119A1 (fr) |
| CA (1) | CA2504174A1 (fr) |
| DE (1) | DE60321712D1 (fr) |
| HK (1) | HK1077913A1 (fr) |
| WO (1) | WO2004040552A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007064256A2 (fr) * | 2005-11-30 | 2007-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Conversion efficace d'un flux vocal |
| DE102008009720A1 (de) * | 2008-02-19 | 2009-08-20 | Siemens Enterprise Communications Gmbh & Co. Kg | Verfahren und Mittel zur Dekodierung von Hintergrundrauschinformationen |
| CN104751849B (zh) | 2013-12-31 | 2017-04-19 | 华为技术有限公司 | 语音频码流的解码方法及装置 |
| CN107369454B (zh) | 2014-03-21 | 2020-10-27 | 华为技术有限公司 | 语音频码流的解码方法及装置 |
| CN105869653B (zh) * | 2016-05-31 | 2019-07-12 | 华为技术有限公司 | 话音信号处理方法和相关装置和系统 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3297156B2 (ja) * | 1993-08-17 | 2002-07-02 | 三菱電機株式会社 | 音声判別装置 |
| JP3483958B2 (ja) * | 1994-10-28 | 2004-01-06 | 三菱電機株式会社 | 広帯域音声復元装置及び広帯域音声復元方法及び音声伝送システム及び音声伝送方法 |
| JP3189614B2 (ja) * | 1995-03-13 | 2001-07-16 | 松下電器産業株式会社 | 音声帯域拡大装置 |
| JPH0918347A (ja) * | 1995-06-28 | 1997-01-17 | Oki Electric Ind Co Ltd | 音声符号化方式変換装置 |
| JP4296622B2 (ja) * | 1998-10-26 | 2009-07-15 | ソニー株式会社 | エコー消去装置及び方法、並びに音声再生装置 |
| JP4135242B2 (ja) * | 1998-12-18 | 2008-08-20 | ソニー株式会社 | 受信装置及び方法、通信装置及び方法 |
| JP2000206995A (ja) * | 1999-01-11 | 2000-07-28 | Sony Corp | 受信装置及び方法、通信装置及び方法 |
| US6260009B1 (en) * | 1999-02-12 | 2001-07-10 | Qualcomm Incorporated | CELP-based to CELP-based vocoder packet translation |
-
2002
- 2002-10-31 JP JP2002317204A patent/JP4438280B2/ja not_active Expired - Fee Related
-
2003
- 2003-10-08 CN CNB2003801022915A patent/CN100498933C/zh not_active Expired - Fee Related
- 2003-10-08 KR KR1020057007432A patent/KR100715014B1/ko not_active IP Right Cessation
- 2003-10-08 CA CA002504174A patent/CA2504174A1/fr not_active Abandoned
- 2003-10-08 AU AU2003271119A patent/AU2003271119A1/en not_active Abandoned
- 2003-10-08 WO PCT/JP2003/012859 patent/WO2004040552A1/fr active IP Right Grant
- 2003-10-08 DE DE60321712T patent/DE60321712D1/de not_active Expired - Lifetime
- 2003-10-08 EP EP03751372A patent/EP1564723B1/fr not_active Expired - Fee Related
-
2005
- 2005-11-03 HK HK05109774A patent/HK1077913A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP4438280B2 (ja) | 2010-03-24 |
| EP1564723B1 (fr) | 2008-06-18 |
| EP1564723A1 (fr) | 2005-08-17 |
| HK1077913A1 (en) | 2006-02-24 |
| KR20050061579A (ko) | 2005-06-22 |
| EP1564723A4 (fr) | 2005-12-21 |
| CN100498933C (zh) | 2009-06-10 |
| AU2003271119A1 (en) | 2004-05-25 |
| WO2004040552A1 (fr) | 2004-05-13 |
| JP2004151424A (ja) | 2004-05-27 |
| KR100715014B1 (ko) | 2007-05-09 |
| DE60321712D1 (de) | 2008-07-31 |
| CN1708786A (zh) | 2005-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7454330B1 (en) | Method and apparatus for speech encoding and decoding by sinusoidal analysis and waveform encoding with phase reproducibility | |
| JP4550289B2 (ja) | Ｃｅｌｐ符号変換 | |
| JP3653826B2 (ja) | 音声復号化方法及び装置 | |
| KR100615480B1 (ko) | 음성 대역 확장 장치 및 음성 대역 확장 방법 | |
| US6532443B1 (en) | Reduced length infinite impulse response weighting | |
| JP4302978B2 (ja) | 音声コーデックにおける擬似高帯域信号の推定システム | |
| JP4040126B2 (ja) | 音声復号化方法および装置 | |
| US7486719B2 (en) | Transcoder and code conversion method | |
| TW463143B (en) | Low-bit rate speech encoding method | |
| US20040111257A1 (en) | Transcoding apparatus and method between CELP-based codecs using bandwidth extension | |
| JP2002268686A (ja) | 音声符号化装置及び音声復号化装置 | |
| EP1619666B1 (fr) | Decodeur vocal, programme et procede de decodage vocal, support d'enregistrement | |
| WO2014034697A1 (fr) | Procédé de décodage, dispositif de décodage, programme et procédé d'enregistrement associé | |
| EP1564723B1 (fr) | Transcodeur et procede de conversion par codeur | |
| JP4433668B2 (ja) | 帯域拡張装置及び方法 | |
| JP3481027B2 (ja) | 音声符号化装置 | |
| JP3578933B2 (ja) | 重み符号帳の作成方法及び符号帳設計時における学習時のｍａ予測係数の初期値の設定方法並びに音響信号の符号化方法及びその復号方法並びに符号化プログラムが記憶されたコンピュータに読み取り可能な記憶媒体及び復号プログラムが記憶されたコンピュータに読み取り可能な記憶媒体 | |
| KR20080034819A (ko) | 부호화/복호화 장치 및 방법 | |
| JP3063087B2 (ja) | 音声符号化復号化装置及び音声符号化装置ならびに音声復号化装置 | |
| JP3006790B2 (ja) | 音声符号化復号化方法及びその装置 | |
| JPH034300A (ja) | 音声符号化復号化方式 | |
| JPH0844397A (ja) | 音声符号化装置 | |
| JPH09146598A (ja) | 音声符号化における雑音抑圧方法 | |
| JPH08254999A (ja) | ゲイン量子化装置および音声符号化／復号化装置 | |
| JP2004046238A (ja) | 広帯域音声復元装置及び広帯域音声復元方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |