HK1069472A1 - Signal modification method for efficient coding ofspeech signals - Google Patents
Signal modification method for efficient coding ofspeech signalsInfo
- Publication number
- HK1069472A1 HK1069472A1 HK05101816A HK05101816A HK1069472A1 HK 1069472 A1 HK1069472 A1 HK 1069472A1 HK 05101816 A HK05101816 A HK 05101816A HK 05101816 A HK05101816 A HK 05101816A HK 1069472 A1 HK1069472 A1 HK 1069472A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- signal
- sound signal
- frame
- previous frame
- feature
- Prior art date
Links
- 238000002715 modification method Methods 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 abstract 17
- 238000001914 filtration Methods 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 abstract 1
- 238000013507 mapping Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 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 (2)
| 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 |
| PCT/CA2002/001948 WO2003052744A2 (en) | 2001-12-14 | 2002-12-13 | Signal modification method for efficient coding of speech signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK1069472A1 true HK1069472A1 (en) | 2005-05-20 |
Family
ID=4170862
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK05101816A HK1069472A1 (en) | 2001-12-14 | 2005-03-02 | Signal modification method for efficient coding ofspeech signals |
| HK10100712.5A HK1133730A1 (en) | 2001-12-14 | 2010-01-22 | Signal modification method for efficient coding of speech signals |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK10100712.5A HK1133730A1 (en) | 2001-12-14 | 2010-01-22 | Signal modification method for efficient coding of speech signals |
Country Status (19)
| Country | Link |
|---|---|
| US (2) | US7680651B2 (ru) |
| EP (2) | EP1758101A1 (ru) |
| JP (1) | JP2005513539A (ru) |
| KR (1) | KR20040072658A (ru) |
| CN (2) | CN1618093A (ru) |
| AT (1) | ATE358870T1 (ru) |
| AU (1) | AU2002350340B2 (ru) |
| BR (1) | BR0214920A (ru) |
| CA (1) | CA2365203A1 (ru) |
| DE (1) | DE60219351T2 (ru) |
| ES (1) | ES2283613T3 (ru) |
| HK (2) | HK1069472A1 (ru) |
| MX (1) | MXPA04005764A (ru) |
| MY (1) | MY131886A (ru) |
| NO (1) | NO20042974L (ru) |
| NZ (1) | NZ533416A (ru) |
| RU (1) | RU2302665C2 (ru) |
| WO (1) | WO2003052744A2 (ru) |
| ZA (1) | ZA200404625B (ru) |
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 |
| KR101176532B1 (ko) | 2005-04-01 | 2012-08-24 | 삼성전자주식회사 | 디스플레이 기능을 갖는 버튼을 구비한 단말기 및 이를위한 키입력 방법 |
| JP5129115B2 (ja) * | 2005-04-01 | 2013-01-23 | クゥアルコム・インコーポレイテッド | 高帯域バーストの抑制のためのシステム、方法、および装置 |
| TWI324336B (en) * | 2005-04-22 | 2010-05-01 | Qualcomm Inc | Method of signal processing and apparatus for gain factor smoothing |
| JP5032314B2 (ja) * | 2005-06-23 | 2012-09-26 | パナソニック株式会社 | オーディオ符号化装置、オーディオ復号化装置およびオーディオ符号化情報伝送装置 |
| JP2009501353A (ja) * | 2005-07-14 | 2009-01-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | オーディオ信号合成 |
| JP2007114417A (ja) * | 2005-10-19 | 2007-05-10 | Fujitsu Ltd | 音声データ処理方法及び装置 |
| US20070276657A1 (en) * | 2006-04-27 | 2007-11-29 | 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 |
| EP2128855A1 (en) * | 2007-03-02 | 2009-12-02 | Panasonic Corporation | Voice encoding device and voice encoding method |
| 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 |
| WO2009078093A1 (ja) * | 2007-12-18 | 2009-06-25 | Fujitsu Limited | 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 |
| 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 |
| US20090319261A1 (en) * | 2008-06-20 | 2009-12-24 | Qualcomm Incorporated | Coding of transitional speech frames for low-bit-rate applications |
| MY154452A (en) * | 2008-07-11 | 2015-06-15 | Fraunhofer Ges Forschung | An apparatus and a method for decoding an encoded audio signal |
| PL2311033T3 (pl) | 2008-07-11 | 2012-05-31 | Fraunhofer Ges Forschung | Dostarczanie sygnału aktywującego dopasowanie czasowe i kodowanie sygnału audio z jego użyciem |
| GB2466669B (en) | 2009-01-06 | 2013-03-06 | Skype | Speech coding |
| 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 |
| GB2466671B (en) | 2009-01-06 | 2013-03-27 | Skype | Speech encoding |
| GB2466673B (en) | 2009-01-06 | 2012-11-07 | Skype | Quantization |
| GB2466670B (en) | 2009-01-06 | 2012-11-14 | 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 |
| EP2395504B1 (en) * | 2009-02-13 | 2013-09-18 | Huawei Technologies Co., Ltd. | Stereo encoding method and apparatus |
| 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 |
| CN105374362B (zh) * | 2010-01-08 | 2019-05-10 | 日本电信电话株式会社 | 编码方法、解码方法、编码装置、解码装置以及记录介质 |
| ES2458354T3 (es) * | 2010-03-10 | 2014-05-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Decodificador de señales de audio, codificador de señales de audio, métodos y programa de ordenador que utiliza tasa de muestreo dependiente de la codificación del contorno de distorsión en el tiempo |
| CA3067155C (en) * | 2010-09-16 | 2021-01-19 | Dolby International Ab | Cross product enhanced subband block based harmonic transposition |
| US9082416B2 (en) * | 2010-09-16 | 2015-07-14 | Qualcomm Incorporated | Estimating a pitch lag |
| EP2671323B1 (en) * | 2011-02-01 | 2016-10-05 | Huawei Technologies Co., Ltd. | Method and apparatus for providing signal processing coefficients |
| PT2676267T (pt) | 2011-02-14 | 2017-09-26 | Fraunhofer Ges Forschung | Codificação e descodificação de posições de pulso de faixas de um sinal de áudio |
| BR112013020587B1 (pt) | 2011-02-14 | 2021-03-09 | Fraunhofer-Gesellschaft Zur Forderung De Angewandten Forschung E.V. | esquema de codificação com base em previsão linear utilizando modelagem de ruído de domínio espectral |
| WO2012110415A1 (en) | 2011-02-14 | 2012-08-23 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for processing a decoded audio signal in a spectral domain |
| EP2676270B1 (en) | 2011-02-14 | 2017-02-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Coding a portion of an audio signal using a transient detection and a quality result |
| WO2012110478A1 (en) | 2011-02-14 | 2012-08-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Information signal representation using lapped transform |
| KR101551046B1 (ko) | 2011-02-14 | 2015-09-07 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법 |
| JP5969513B2 (ja) * | 2011-02-14 | 2016-08-17 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | 不活性相の間のノイズ合成を用いるオーディオコーデック |
| US9015044B2 (en) * | 2012-03-05 | 2015-04-21 | Malaspina Labs (Barbados) Inc. | Formant based speech reconstruction from noisy signals |
| 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 |
| 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 |
| US9208775B2 (en) | 2013-02-21 | 2015-12-08 | Qualcomm Incorporated | Systems and methods for determining pitch pulse period signal boundaries |
| PT3011561T (pt) | 2013-06-21 | 2017-07-25 | Fraunhofer Ges Forschung | Aparelho e método para desvanecimento de sinal aperfeiçoado em diferentes domínios durante ocultação de erros |
| EP3095112B1 (en) * | 2014-01-14 | 2019-10-30 | 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 (ru) * | 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 |
| US6449590B1 (en) * | 1998-08-24 | 2002-09-10 | Conexant Systems, Inc. | Speech encoder using warping in long term preprocessing |
| 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 |
| 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 JP JP2003553555A patent/JP2005513539A/ja not_active Withdrawn
- 2002-12-13 KR KR10-2004-7009260A patent/KR20040072658A/ko not_active Application Discontinuation
- 2002-12-13 ES ES02784985T patent/ES2283613T3/es not_active Expired - Lifetime
- 2002-12-13 AU AU2002350340A patent/AU2002350340B2/en not_active Ceased
- 2002-12-13 BR BR0214920-6A patent/BR0214920A/pt not_active IP Right Cessation
- 2002-12-13 CN CNA028276078A patent/CN1618093A/zh active Pending
- 2002-12-13 EP EP06125444A patent/EP1758101A1/en not_active Withdrawn
- 2002-12-13 MX MXPA04005764A patent/MXPA04005764A/es active IP Right Grant
- 2002-12-13 CN CN200910005427XA patent/CN101488345B/zh not_active Expired - Lifetime
- 2002-12-13 WO PCT/CA2002/001948 patent/WO2003052744A2/en active IP Right Grant
- 2002-12-13 AT AT02784985T patent/ATE358870T1/de not_active IP Right Cessation
- 2002-12-13 US US10/498,254 patent/US7680651B2/en active Active
- 2002-12-13 EP EP02784985A patent/EP1454315B1/en not_active Expired - Lifetime
- 2002-12-13 DE DE60219351T patent/DE60219351T2/de not_active Expired - Lifetime
- 2002-12-13 NZ NZ533416A patent/NZ533416A/en unknown
- 2002-12-13 RU RU2004121463/09A patent/RU2302665C2/ru active
- 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 |
|---|---|
| MY131886A (en) | 2007-09-28 |
| JP2005513539A (ja) | 2005-05-12 |
| RU2302665C2 (ru) | 2007-07-10 |
| CA2365203A1 (en) | 2003-06-14 |
| CN101488345B (zh) | 2013-07-24 |
| EP1758101A1 (en) | 2007-02-28 |
| ZA200404625B (en) | 2006-05-31 |
| CN1618093A (zh) | 2005-05-18 |
| AU2002350340A1 (en) | 2003-06-30 |
| US20050071153A1 (en) | 2005-03-31 |
| ES2283613T3 (es) | 2007-11-01 |
| DE60219351T2 (de) | 2007-08-02 |
| RU2004121463A (ru) | 2006-01-10 |
| BR0214920A (pt) | 2004-12-21 |
| CN101488345A (zh) | 2009-07-22 |
| EP1454315B1 (en) | 2007-04-04 |
| WO2003052744A2 (en) | 2003-06-26 |
| US7680651B2 (en) | 2010-03-16 |
| ATE358870T1 (de) | 2007-04-15 |
| EP1454315A2 (en) | 2004-09-08 |
| NZ533416A (en) | 2006-09-29 |
| MXPA04005764A (es) | 2005-06-08 |
| HK1133730A1 (en) | 2010-04-01 |
| US20090063139A1 (en) | 2009-03-05 |
| US8121833B2 (en) | 2012-02-21 |
| NO20042974L (no) | 2004-09-14 |
| WO2003052744A3 (en) | 2004-02-05 |
| AU2002350340B2 (en) | 2008-07-24 |
| DE60219351D1 (de) | 2007-05-16 |
| KR20040072658A (ko) | 2004-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| HK1133730A1 (en) | Signal modification method for efficient coding of speech signals | |
| ATE15415T1 (de) | Verfahren und vorrichtung zur redundanzvermindernden digitalen sprachverarbeitung. | |
| EP0360265A3 (en) | Communication system capable of improving a speech quality by classifying speech signals | |
| EP1103955A3 (en) | Multiband harmonic transform coder | |
| EP1391879A3 (en) | Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus | |
| JP2005513539A5 (ru) | ||
| ES2060132T3 (es) | Metodo de posicionar impulsos de excitacion en un codificador de voz predictor lineal. | |
| WO2002033695A3 (en) | Method and apparatus for coding of unvoiced speech | |
| DE69603755D1 (de) | Sprachkodierung mittels Analyse durch Synthese | |
| TW326070B (en) | The estimation method of the impulse gain for coding vocoder | |
| CA2006487A1 (en) | Communication system capable of improving a speech quality by effectively calculating excitation multipulses | |
| DE68917584D1 (de) | Zur Sprachqualitätsverbesserung geeignetes Kodiergerät unter Anwendung einer Doppelanlage zur Pulserzeugung. | |
| JP2002505450A (ja) | ハイブリッド被刺激線形予測スピーチ符号化装置及び方法 | |
| CN1190773A (zh) | 语音编码的波形增益估测方法 | |
| JP2621275B2 (ja) | 音声符号化速度変換装置 | |
| JPS6413598A (en) | Voice encoder | |
| RU96120775A (ru) | Способ и устройство кодирования звукового сигнала | |
| JPH07110699A (ja) | 音声信号の符号化方法 | |
| GB2130852A (en) | Speech signal reproducing systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20101213 |