ZA200404625B - Signal modification method for efficient coding of speech signals - Google Patents
Signal modification method for efficient coding of speech signals Download PDFInfo
- Publication number
- ZA200404625B ZA200404625B ZA200404625A ZA200404625A ZA200404625B ZA 200404625 B ZA200404625 B ZA 200404625B ZA 200404625 A ZA200404625 A ZA 200404625A ZA 200404625 A ZA200404625 A ZA 200404625A ZA 200404625 B ZA200404625 B ZA 200404625B
- Authority
- ZA
- South Africa
- Prior art keywords
- signal
- pitch
- frame
- speech signal
- delay
- Prior art date
Links
- 238000002715 modification method Methods 0.000 title abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 101
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 15
- 238000007670 refining Methods 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 88
- 230000004048 modification Effects 0.000 abstract description 88
- 230000005236 sound signal Effects 0.000 abstract description 79
- 230000007774 longterm Effects 0.000 abstract description 39
- 238000013507 mapping Methods 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 description 44
- 230000003044 adaptive effect Effects 0.000 description 22
- 230000000875 corresponding effect Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 11
- 230000004044 response Effects 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 10
- 238000007781 pre-processing Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000011218 segmentation Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000593 degrading effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013139 quantization Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 101100426956 Caenorhabditis elegans ttn-1 gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000013519 translation 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
-
- 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
- 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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002365203A CA2365203A1 (en) | 2001-12-14 | 2001-12-14 | A signal modification method for efficient coding of speech signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200404625B true ZA200404625B (en) | 2006-05-31 |
Family
ID=4170862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200404625A ZA200404625B (en) | 2001-12-14 | 2004-06-10 | Signal modification method for efficient coding of speech signals |
Country Status (19)
| Country | Link |
|---|---|
| US (2) | US7680651B2 (ko) |
| EP (2) | EP1758101A1 (ko) |
| JP (1) | JP2005513539A (ko) |
| KR (1) | KR20040072658A (ko) |
| CN (2) | CN1618093A (ko) |
| AT (1) | ATE358870T1 (ko) |
| AU (1) | AU2002350340B2 (ko) |
| BR (1) | BR0214920A (ko) |
| CA (1) | CA2365203A1 (ko) |
| DE (1) | DE60219351T2 (ko) |
| ES (1) | ES2283613T3 (ko) |
| HK (2) | HK1069472A1 (ko) |
| MX (1) | MXPA04005764A (ko) |
| MY (1) | MY131886A (ko) |
| NO (1) | NO20042974L (ko) |
| NZ (1) | NZ533416A (ko) |
| RU (1) | RU2302665C2 (ko) |
| WO (1) | WO2003052744A2 (ko) |
| ZA (1) | ZA200404625B (ko) |
Families Citing this family (63)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050091044A1 (en) * | 2003-10-23 | 2005-04-28 | Nokia Corporation | Method and system for pitch contour quantization in audio coding |
| BRPI0607646B1 (pt) * | 2005-04-01 | 2021-05-25 | Qualcomm Incorporated | Método e equipamento para encodificação por divisão de banda de sinais de fala |
| US20060221059A1 (en) | 2005-04-01 | 2006-10-05 | Samsung Electronics Co., Ltd. | Portable terminal having display buttons and method of inputting functions using display buttons |
| PL1875463T3 (pl) * | 2005-04-22 | 2019-03-29 | Qualcomm Incorporated | Układy, sposoby i urządzenie do wygładzania współczynnika wzmocnienia |
| CN101203907B (zh) * | 2005-06-23 | 2011-09-28 | 松下电器产业株式会社 | 音频编码装置、音频解码装置以及音频编码信息传输装置 |
| ATE443318T1 (de) * | 2005-07-14 | 2009-10-15 | Koninkl Philips Electronics Nv | Audiosignalsynthese |
| JP2007114417A (ja) * | 2005-10-19 | 2007-05-10 | Fujitsu Ltd | 音声データ処理方法及び装置 |
| CA2650419A1 (en) * | 2006-04-27 | 2007-11-08 | Technologies Humanware Canada Inc. | Method for the time scaling of an audio signal |
| US8260609B2 (en) * | 2006-07-31 | 2012-09-04 | Qualcomm Incorporated | Systems, methods, and apparatus for wideband encoding and decoding of inactive frames |
| US8239190B2 (en) | 2006-08-22 | 2012-08-07 | Qualcomm Incorporated | Time-warping frames of wideband vocoder |
| US8688437B2 (en) * | 2006-12-26 | 2014-04-01 | Huawei Technologies Co., Ltd. | Packet loss concealment for speech coding |
| KR100883656B1 (ko) * | 2006-12-28 | 2009-02-18 | 삼성전자주식회사 | 오디오 신호의 분류 방법 및 장치와 이를 이용한 오디오신호의 부호화/복호화 방법 및 장치 |
| JP5596341B2 (ja) * | 2007-03-02 | 2014-09-24 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ | 音声符号化装置および音声符号化方法 |
| US8312492B2 (en) * | 2007-03-19 | 2012-11-13 | At&T Intellectual Property I, L.P. | Systems and methods of providing modified media content |
| US8160872B2 (en) * | 2007-04-05 | 2012-04-17 | Texas Instruments Incorporated | Method and apparatus for layered code-excited linear prediction speech utilizing linear prediction excitation corresponding to optimal gains |
| US9653088B2 (en) * | 2007-06-13 | 2017-05-16 | Qualcomm Incorporated | Systems, methods, and apparatus for signal encoding using pitch-regularizing and non-pitch-regularizing coding |
| US8515767B2 (en) | 2007-11-04 | 2013-08-20 | Qualcomm Incorporated | Technique for encoding/decoding of codebook indices for quantized MDCT spectrum in scalable speech and audio codecs |
| JP5229234B2 (ja) * | 2007-12-18 | 2013-07-03 | 富士通株式会社 | 非音声区間検出方法及び非音声区間検出装置 |
| EP2107556A1 (en) | 2008-04-04 | 2009-10-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio transform coding using pitch correction |
| KR20090122143A (ko) * | 2008-05-23 | 2009-11-26 | 엘지전자 주식회사 | 오디오 신호 처리 방법 및 장치 |
| US8355921B2 (en) * | 2008-06-13 | 2013-01-15 | Nokia Corporation | Method, apparatus and computer program product for providing improved audio processing |
| US20090319261A1 (en) * | 2008-06-20 | 2009-12-24 | Qualcomm Incorporated | Coding of transitional speech frames for low-bit-rate applications |
| US8768690B2 (en) * | 2008-06-20 | 2014-07-01 | Qualcomm Incorporated | Coding scheme selection for low-bit-rate applications |
| US20090319263A1 (en) * | 2008-06-20 | 2009-12-24 | Qualcomm Incorporated | Coding of transitional speech frames for low-bit-rate applications |
| CN103000178B (zh) * | 2008-07-11 | 2015-04-08 | 弗劳恩霍夫应用研究促进协会 | 提供时间扭曲激活信号以及使用该时间扭曲激活信号对音频信号编码 |
| MY154452A (en) | 2008-07-11 | 2015-06-15 | Fraunhofer Ges Forschung | An apparatus and a method for decoding an encoded audio signal |
| GB2466669B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
| GB2466670B (en) | 2009-01-06 | 2012-11-14 | Skype | Speech encoding |
| GB2466675B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
| GB2466672B (en) * | 2009-01-06 | 2013-03-13 | Skype | Speech coding |
| GB2466674B (en) | 2009-01-06 | 2013-11-13 | Skype | Speech coding |
| GB2466673B (en) | 2009-01-06 | 2012-11-07 | Skype | Quantization |
| GB2466671B (en) | 2009-01-06 | 2013-03-27 | Skype | Speech encoding |
| EP2211335A1 (en) * | 2009-01-21 | 2010-07-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method and computer program for obtaining a parameter describing a variation of a signal characteristic of a signal |
| KR101622950B1 (ko) * | 2009-01-28 | 2016-05-23 | 삼성전자주식회사 | 오디오 신호의 부호화 및 복호화 방법 및 그 장치 |
| WO2010091555A1 (zh) * | 2009-02-13 | 2010-08-19 | 华为技术有限公司 | 一种立体声编码方法和装置 |
| US20100225473A1 (en) * | 2009-03-05 | 2010-09-09 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Postural information system and method |
| KR101297026B1 (ko) | 2009-05-19 | 2013-08-14 | 광운대학교 산학협력단 | Ｍｄｃｔ―ｔｃｘ 프레임과 ｃｅｌｐ 프레임 간 연동을 위한 윈도우 처리 장치 및 윈도우 처리 방법 |
| KR20110001130A (ko) * | 2009-06-29 | 2011-01-06 | 삼성전자주식회사 | 가중 선형 예측 변환을 이용한 오디오 신호 부호화 및 복호화 장치 및 그 방법 |
| US8452606B2 (en) | 2009-09-29 | 2013-05-28 | Skype | Speech encoding using multiple bit rates |
| KR101381272B1 (ko) * | 2010-01-08 | 2014-04-07 | 니뽄 덴신 덴와 가부시키가이샤 | 부호화 방법, 복호 방법, 부호화 장치, 복호 장치, 프로그램 및 기록 매체 |
| KR101445296B1 (ko) * | 2010-03-10 | 2014-09-29 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 샘플링 레이트 의존 시간 왜곡 윤곽 인코딩을 이용하는 오디오 신호 디코더, 오디오 신호 인코더, 방법, 및 컴퓨터 프로그램 |
| KR102564590B1 (ko) * | 2010-09-16 | 2023-08-09 | 돌비 인터네셔널 에이비 | 교차 곱 강화된 서브밴드 블록 기반 고조파 전위 |
| US9082416B2 (en) * | 2010-09-16 | 2015-07-14 | Qualcomm Incorporated | Estimating a pitch lag |
| CN102783034B (zh) * | 2011-02-01 | 2014-12-17 | 华为技术有限公司 | 用于提供信号处理系数的方法和设备 |
| AU2012217216B2 (en) | 2011-02-14 | 2015-09-17 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result |
| CN103534754B (zh) * | 2011-02-14 | 2015-09-30 | 弗兰霍菲尔运输应用研究公司 | 在不活动阶段期间利用噪声合成的音频编解码器 |
| CN102959620B (zh) | 2011-02-14 | 2015-05-13 | 弗兰霍菲尔运输应用研究公司 | 利用重迭变换的信息信号表示 |
| ES2534972T3 (es) | 2011-02-14 | 2015-04-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Predicción lineal basada en esquema de codificación utilizando conformación de ruido de dominio espectral |
| PL3471092T3 (pl) * | 2011-02-14 | 2020-12-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dekodowanie pozycji impulsów ścieżek sygnału audio |
| SG192746A1 (en) | 2011-02-14 | 2013-09-30 | Fraunhofer Ges Forschung | Apparatus and method for processing a decoded audio signal in a spectral domain |
| CA2827000C (en) | 2011-02-14 | 2016-04-05 | Jeremie Lecomte | Apparatus and method for error concealment in low-delay unified speech and audio coding (usac) |
| US9015044B2 (en) * | 2012-03-05 | 2015-04-21 | Malaspina Labs (Barbados) Inc. | Formant based speech reconstruction from noisy signals |
| US9406307B2 (en) * | 2012-08-19 | 2016-08-02 | The Regents Of The University Of California | Method and apparatus for polyphonic audio signal prediction in coding and networking systems |
| US9830920B2 (en) | 2012-08-19 | 2017-11-28 | The Regents Of The University Of California | Method and apparatus for polyphonic audio signal prediction in coding and networking systems |
| US9208775B2 (en) | 2013-02-21 | 2015-12-08 | Qualcomm Incorporated | Systems and methods for determining pitch pulse period signal boundaries |
| PL3011557T3 (pl) | 2013-06-21 | 2017-10-31 | Fraunhofer Ges Forschung | Urządzenie i sposób do udoskonalonego stopniowego zmniejszania sygnału w przełączanych układach kodowania sygnału audio podczas ukrywania błędów |
| AU2015206631A1 (en) * | 2014-01-14 | 2016-06-30 | Interactive Intelligence Group, Inc. | System and method for synthesis of speech from provided text |
| FR3024581A1 (fr) * | 2014-07-29 | 2016-02-05 | Orange | Determination d'un budget de codage d'une trame de transition lpd/fd |
| KR102422794B1 (ko) * | 2015-09-04 | 2022-07-20 | 삼성전자주식회사 | 재생지연 조절 방법 및 장치와 시간축 변형방법 및 장치 |
| EP3306609A1 (en) * | 2016-10-04 | 2018-04-11 | Fraunhofer Gesellschaft zur Förderung der Angewand | Apparatus and method for determining a pitch information |
| US10847172B2 (en) * | 2018-12-17 | 2020-11-24 | Microsoft Technology Licensing, Llc | Phase quantization in a speech encoder |
| US10957331B2 (en) | 2018-12-17 | 2021-03-23 | Microsoft Technology Licensing, Llc | Phase reconstruction in a speech decoder |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2258751B1 (ko) * | 1974-01-18 | 1978-12-08 | Thomson Csf | |
| CA2102080C (en) | 1992-12-14 | 1998-07-28 | Willem Bastiaan Kleijn | Time shifting for generalized analysis-by-synthesis coding |
| FR2729246A1 (fr) * | 1995-01-06 | 1996-07-12 | Matra Communication | Procede de codage de parole a analyse par synthese |
| US5704003A (en) | 1995-09-19 | 1997-12-30 | Lucent Technologies Inc. | RCELP coder |
| US6330533B2 (en) * | 1998-08-24 | 2001-12-11 | Conexant Systems, Inc. | Speech encoder adaptively applying pitch preprocessing with warping of target signal |
| US7072832B1 (en) * | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
| US6449590B1 (en) | 1998-08-24 | 2002-09-10 | Conexant Systems, Inc. | Speech encoder using warping in long term preprocessing |
| US6223151B1 (en) | 1999-02-10 | 2001-04-24 | Telefon Aktie Bolaget Lm Ericsson | Method and apparatus for pre-processing speech signals prior to coding by transform-based speech coders |
-
2001
- 2001-12-14 CA CA002365203A patent/CA2365203A1/en not_active Abandoned
-
2002
- 2002-12-13 CN CNA028276078A patent/CN1618093A/zh active Pending
- 2002-12-13 JP JP2003553555A patent/JP2005513539A/ja not_active Withdrawn
- 2002-12-13 AT AT02784985T patent/ATE358870T1/de not_active IP Right Cessation
- 2002-12-13 RU RU2004121463/09A patent/RU2302665C2/ru active
- 2002-12-13 KR KR10-2004-7009260A patent/KR20040072658A/ko not_active Application Discontinuation
- 2002-12-13 EP EP06125444A patent/EP1758101A1/en not_active Withdrawn
- 2002-12-13 NZ NZ533416A patent/NZ533416A/en unknown
- 2002-12-13 CN CN200910005427XA patent/CN101488345B/zh not_active Expired - Lifetime
- 2002-12-13 ES ES02784985T patent/ES2283613T3/es not_active Expired - Lifetime
- 2002-12-13 BR BR0214920-6A patent/BR0214920A/pt not_active IP Right Cessation
- 2002-12-13 MX MXPA04005764A patent/MXPA04005764A/es active IP Right Grant
- 2002-12-13 DE DE60219351T patent/DE60219351T2/de not_active Expired - Lifetime
- 2002-12-13 US US10/498,254 patent/US7680651B2/en active Active
- 2002-12-13 AU AU2002350340A patent/AU2002350340B2/en not_active Ceased
- 2002-12-13 WO PCT/CA2002/001948 patent/WO2003052744A2/en active IP Right Grant
- 2002-12-13 EP EP02784985A patent/EP1454315B1/en not_active Expired - Lifetime
- 2002-12-16 MY MYPI20024699A patent/MY131886A/en unknown
-
2004
- 2004-06-10 ZA ZA200404625A patent/ZA200404625B/en unknown
- 2004-07-14 NO NO20042974A patent/NO20042974L/no not_active Application Discontinuation
-
2005
- 2005-03-02 HK HK05101816A patent/HK1069472A1/xx not_active IP Right Cessation
-
2008
- 2008-10-21 US US12/288,592 patent/US8121833B2/en not_active Expired - Lifetime
-
2010
- 2010-01-22 HK HK10100712.5A patent/HK1133730A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BR0214920A (pt) | 2004-12-21 |
| US20090063139A1 (en) | 2009-03-05 |
| NO20042974L (no) | 2004-09-14 |
| AU2002350340B2 (en) | 2008-07-24 |
| ATE358870T1 (de) | 2007-04-15 |
| RU2004121463A (ru) | 2006-01-10 |
| JP2005513539A (ja) | 2005-05-12 |
| WO2003052744A3 (en) | 2004-02-05 |
| CN101488345B (zh) | 2013-07-24 |
| MXPA04005764A (es) | 2005-06-08 |
| DE60219351D1 (de) | 2007-05-16 |
| US8121833B2 (en) | 2012-02-21 |
| WO2003052744A2 (en) | 2003-06-26 |
| NZ533416A (en) | 2006-09-29 |
| US20050071153A1 (en) | 2005-03-31 |
| US7680651B2 (en) | 2010-03-16 |
| AU2002350340A1 (en) | 2003-06-30 |
| RU2302665C2 (ru) | 2007-07-10 |
| EP1454315A2 (en) | 2004-09-08 |
| CN1618093A (zh) | 2005-05-18 |
| CN101488345A (zh) | 2009-07-22 |
| MY131886A (en) | 2007-09-28 |
| ES2283613T3 (es) | 2007-11-01 |
| HK1133730A1 (en) | 2010-04-01 |
| CA2365203A1 (en) | 2003-06-14 |
| DE60219351T2 (de) | 2007-08-02 |
| EP1454315B1 (en) | 2007-04-04 |
| HK1069472A1 (en) | 2005-05-20 |
| KR20040072658A (ko) | 2004-08-18 |
| EP1758101A1 (en) | 2007-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2002350340B2 (en) | Signal modification method for efficient coding of speech signals | |
| JP5412463B2 (ja) | 音声信号内の雑音様信号の存在に基づく音声パラメータの平滑化 | |
| JP4390803B2 (ja) | 可変ビットレート広帯域通話符号化におけるゲイン量子化方法および装置 | |
| US6507814B1 (en) | Pitch determination using speech classification and prior pitch estimation | |
| US6330533B2 (en) | Speech encoder adaptively applying pitch preprocessing with warping of target signal | |
| JP4931318B2 (ja) | スピーチ符号化における前方向誤り訂正 | |
| US8650028B2 (en) | Multi-mode speech encoding system for encoding a speech signal used for selection of one of the speech encoding modes including multiple speech encoding rates | |
| US6260010B1 (en) | Speech encoder using gain normalization that combines open and closed loop gains | |
| EP1979895A1 (en) | Method and device for efficient frame erasure concealment in speech codecs | |
| WO2000011658A1 (en) | Speech classification and parameter weighting used in codebook search | |
| KR20040042903A (ko) | 일반화된 분석에 의한 합성 스피치 코딩 방법 및 그방법을 구현하는 코더 | |
| Jelinek et al. | On the architecture of the cdma2000/spl reg/variable-rate multimode wideband (VMR-WB) speech coding standard | |
| CA2469774A1 (en) | Signal modification method for efficient coding of speech signals |