DE69532879T2 - Vorrichtung zur Sprachkodierung, zur linear-prädiktiven Analyse und zur Geräuschverminderung - Google Patents
Vorrichtung zur Sprachkodierung, zur linear-prädiktiven Analyse und zur Geräuschverminderung Download PDFInfo
- Publication number
- DE69532879T2 DE69532879T2 DE69532879T DE69532879T DE69532879T2 DE 69532879 T2 DE69532879 T2 DE 69532879T2 DE 69532879 T DE69532879 T DE 69532879T DE 69532879 T DE69532879 T DE 69532879T DE 69532879 T2 DE69532879 T2 DE 69532879T2
- Authority
- DE
- Germany
- Prior art keywords
- linear
- noise reduction
- speech coding
- predictive analysis
- predictive
- 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
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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- 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
- G10L19/09—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 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
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/08—Speech classification or search
- G10L15/16—Speech classification or search using artificial neural networks
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/12—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being prediction coefficients
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31448394A JP3183072B2 (ja) | 1994-12-19 | 1994-12-19 | 音声符号化装置 |
| JP6322494A JPH08179800A (ja) | 1994-12-26 | 1994-12-26 | 音声符号化装置 |
| JP32249594A JP3250398B2 (ja) | 1994-12-26 | 1994-12-26 | 線形予測係数分析装置 |
| JP17848495A JP3183104B2 (ja) | 1995-07-14 | 1995-07-14 | ノイズ削減装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69532879D1 DE69532879D1 (de) | 2004-05-19 |
| DE69532879T2 true DE69532879T2 (de) | 2005-04-21 |
Family
ID=27474829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69532879T Expired - Lifetime DE69532879T2 (de) | 1994-12-19 | 1995-11-27 | Vorrichtung zur Sprachkodierung, zur linear-prädiktiven Analyse und zur Geräuschverminderung |
Country Status (3)
| Country | Link |
|---|---|
| US (4) | US5774846A (de) |
| EP (3) | EP1391879A3 (de) |
| DE (1) | DE69532879T2 (de) |
Families Citing this family (86)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3183104B2 (ja) | 1995-07-14 | 2001-07-03 | 松下電器産業株式会社 | ノイズ削減装置 |
| JP3250398B2 (ja) | 1994-12-26 | 2002-01-28 | 松下電器産業株式会社 | 線形予測係数分析装置 |
| US5774846A (en) * | 1994-12-19 | 1998-06-30 | Matsushita Electric Industrial Co., Ltd. | Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus |
| SE513892C2 (sv) * | 1995-06-21 | 2000-11-20 | Ericsson Telefon Ab L M | Spektral effekttäthetsestimering av talsignal Metod och anordning med LPC-analys |
| JP3259759B2 (ja) * | 1996-07-22 | 2002-02-25 | 日本電気株式会社 | 音声信号伝送方法及び音声符号復号化システム |
| US5924064A (en) * | 1996-10-07 | 1999-07-13 | Picturetel Corporation | Variable length coding using a plurality of region bit allocation patterns |
| DE69708697T2 (de) * | 1996-11-07 | 2002-08-01 | Matsushita Electric Ind Co Ltd | Verfahren zur Erzeugung eines Vektorquantisierungs-codebuchs, und Vorrichtung und Verfahren zur Sprachcodierung/-decodierung |
| IL120788A (en) * | 1997-05-06 | 2000-07-16 | Audiocodes Ltd | Systems and methods for encoding and decoding speech for lossy transmission networks |
| FR2764469B1 (fr) * | 1997-06-09 | 2002-07-12 | France Telecom | Procede et dispositif de traitement optimise d'un signal perturbateur lors d'une prise de son |
| US6510408B1 (en) * | 1997-07-01 | 2003-01-21 | Patran Aps | Method of noise reduction in speech signals and an apparatus for performing the method |
| US6044341A (en) * | 1997-07-16 | 2000-03-28 | Olympus Optical Co., Ltd. | Noise suppression apparatus and recording medium recording processing program for performing noise removal from voice |
| JP3507686B2 (ja) * | 1998-01-16 | 2004-03-15 | 日本電気株式会社 | 音声認識機能を有する通信装置及び通信方法 |
| US6453289B1 (en) | 1998-07-24 | 2002-09-17 | Hughes Electronics Corporation | Method of noise reduction for speech codecs |
| EP0984365A3 (de) * | 1998-08-12 | 2005-03-30 | Yeda Research And Development Company, Ltd. | Verfahren und Gerät zur Datenverarbeitungssteuerung in einem Netz von interaktive Elementen |
| US6330533B2 (en) | 1998-08-24 | 2001-12-11 | Conexant Systems, Inc. | Speech encoder adaptively applying pitch preprocessing with warping of target signal |
| US6449590B1 (en) | 1998-08-24 | 2002-09-10 | Conexant Systems, Inc. | Speech encoder using warping in long term preprocessing |
| US7072832B1 (en) * | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
| US6507814B1 (en) | 1998-08-24 | 2003-01-14 | Conexant Systems, Inc. | Pitch determination using speech classification and prior pitch estimation |
| US6240386B1 (en) * | 1998-08-24 | 2001-05-29 | Conexant Systems, Inc. | Speech codec employing noise classification for noise compensation |
| FI114833B (fi) * | 1999-01-08 | 2004-12-31 | Nokia Corp | Menetelmä, puhekooderi ja matkaviestin puheenkoodauskehysten muodostamiseksi |
| CA2270103C (en) * | 1999-04-23 | 2007-10-23 | Newbridge Networks Corporation | Recognition of a single frequency tone |
| JP2001109489A (ja) | 1999-08-03 | 2001-04-20 | Canon Inc | 音声情報処理方法、装置および記憶媒体 |
| US6795807B1 (en) * | 1999-08-17 | 2004-09-21 | David R. Baraff | Method and means for creating prosody in speech regeneration for laryngectomees |
| US6438518B1 (en) * | 1999-10-28 | 2002-08-20 | Qualcomm Incorporated | Method and apparatus for using coding scheme selection patterns in a predictive speech coder to reduce sensitivity to frame error conditions |
| US6609092B1 (en) * | 1999-12-16 | 2003-08-19 | Lucent Technologies Inc. | Method and apparatus for estimating subjective audio signal quality from objective distortion measures |
| IT1314626B1 (it) * | 2000-04-21 | 2002-12-20 | Ik Multimedia Production Srl | Procedimento per la codifica e la decodifica di flussi di dati,rappresentanti suoni in forma digitale, all'interno di un |
| WO2004084176A1 (ja) * | 2000-08-15 | 2004-09-30 | Yoichi Ando | 音響評価方法およびそのシステム |
| JP3670217B2 (ja) * | 2000-09-06 | 2005-07-13 | 国立大学法人名古屋大学 | 雑音符号化装置、雑音復号装置、雑音符号化方法および雑音復号方法 |
| US6801887B1 (en) * | 2000-09-20 | 2004-10-05 | Nokia Mobile Phones Ltd. | Speech coding exploiting the power ratio of different speech signal components |
| US7289626B2 (en) * | 2001-05-07 | 2007-10-30 | Siemens Communications, Inc. | Enhancement of sound quality for computer telephony systems |
| WO2003001173A1 (en) * | 2001-06-22 | 2003-01-03 | Rti Tech Pte Ltd | A noise-stripping device |
| US6879955B2 (en) * | 2001-06-29 | 2005-04-12 | Microsoft Corporation | Signal modification based on continuous time warping for low bit rate CELP coding |
| US6937978B2 (en) * | 2001-10-30 | 2005-08-30 | Chungwa Telecom Co., Ltd. | Suppression system of background noise of speech signals and the method thereof |
| US6934677B2 (en) | 2001-12-14 | 2005-08-23 | Microsoft Corporation | Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands |
| US7240001B2 (en) | 2001-12-14 | 2007-07-03 | Microsoft Corporation | Quality improvement techniques in an audio encoder |
| JP2003255993A (ja) * | 2002-03-04 | 2003-09-10 | Ntt Docomo Inc | 音声認識システム、音声認識方法、音声認識プログラム、音声合成システム、音声合成方法、音声合成プログラム |
| JP2004012698A (ja) * | 2002-06-05 | 2004-01-15 | Canon Inc | 情報処理装置及び情報処理方法 |
| JP3815388B2 (ja) * | 2002-06-25 | 2006-08-30 | 株式会社デンソー | 音声認識システムおよび端末 |
| JP4676140B2 (ja) * | 2002-09-04 | 2011-04-27 | マイクロソフト コーポレーション | オーディオの量子化および逆量子化 |
| US7299190B2 (en) * | 2002-09-04 | 2007-11-20 | Microsoft Corporation | Quantization and inverse quantization for audio |
| US7502743B2 (en) | 2002-09-04 | 2009-03-10 | Microsoft Corporation | Multi-channel audio encoding and decoding with multi-channel transform selection |
| US7254533B1 (en) * | 2002-10-17 | 2007-08-07 | Dilithium Networks Pty Ltd. | Method and apparatus for a thin CELP voice codec |
| JP3909709B2 (ja) * | 2004-03-09 | 2007-04-25 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 雑音除去装置、方法、及びプログラム |
| JP4434813B2 (ja) * | 2004-03-30 | 2010-03-17 | 学校法人早稲田大学 | 雑音スペクトル推定方法、雑音抑圧方法および雑音抑圧装置 |
| US7492889B2 (en) * | 2004-04-23 | 2009-02-17 | Acoustic Technologies, Inc. | Noise suppression based on bark band wiener filtering and modified doblinger noise estimate |
| US7392187B2 (en) * | 2004-09-20 | 2008-06-24 | Educational Testing Service | Method and system for the automatic generation of speech features for scoring high entropy speech |
| US20070160154A1 (en) * | 2005-03-28 | 2007-07-12 | Sukkar Rafid A | Method and apparatus for injecting comfort noise in a communications signal |
| US7539612B2 (en) * | 2005-07-15 | 2009-05-26 | Microsoft Corporation | Coding and decoding scale factor information |
| US9185487B2 (en) * | 2006-01-30 | 2015-11-10 | Audience, Inc. | System and method for providing noise suppression utilizing null processing noise subtraction |
| JP4774100B2 (ja) * | 2006-03-03 | 2011-09-14 | 日本電信電話株式会社 | 残響除去装置、残響除去方法、残響除去プログラム及び記録媒体 |
| US8949120B1 (en) | 2006-05-25 | 2015-02-03 | Audience, Inc. | Adaptive noise cancelation |
| CN101460998A (zh) * | 2006-05-30 | 2009-06-17 | 皇家飞利浦电子股份有限公司 | 音频信号的线性预测编码 |
| JP4827661B2 (ja) * | 2006-08-30 | 2011-11-30 | 富士通株式会社 | 信号処理方法及び装置 |
| FR2911227A1 (fr) * | 2007-01-05 | 2008-07-11 | France Telecom | Codage par transformee, utilisant des fenetres de ponderation et a faible retard |
| US8077036B2 (en) * | 2007-10-03 | 2011-12-13 | University Of Southern California | Systems and methods for security breach detection |
| US8111174B2 (en) * | 2007-10-03 | 2012-02-07 | University Of Southern California | Acoustic signature recognition of running vehicles using spectro-temporal dynamic neural network |
| US8527266B2 (en) * | 2008-03-21 | 2013-09-03 | Tokyo University Of Science Educational Foundation Administrative Organization | Noise suppression device and noise suppression method |
| WO2010032405A1 (ja) * | 2008-09-16 | 2010-03-25 | パナソニック株式会社 | 音声分析装置、音声分析合成装置、補正規則情報生成装置、音声分析システム、音声分析方法、補正規則情報生成方法、およびプログラム |
| JP4490507B2 (ja) * | 2008-09-26 | 2010-06-30 | パナソニック株式会社 | 音声分析装置および音声分析方法 |
| WO2010118233A2 (en) * | 2009-04-08 | 2010-10-14 | University Of Southern California | Cadence analysis of temporal gait patterns for seismic discrimination |
| US8615476B2 (en) * | 2009-04-15 | 2013-12-24 | University Of Southern California | Protecting military perimeters from approaching human and vehicle using biologically realistic neural network |
| US20110172954A1 (en) * | 2009-04-20 | 2011-07-14 | University Of Southern California | Fence intrusion detection |
| US8159373B2 (en) | 2009-07-28 | 2012-04-17 | Ecole Polytechnique Federale De Lausanne (Epfl) | Encoding and decoding information |
| US8522052B1 (en) * | 2010-04-07 | 2013-08-27 | Xilinx, Inc. | Method and integrated circuit for secure encryption and decryption |
| US9213835B2 (en) | 2010-04-07 | 2015-12-15 | Xilinx, Inc. | Method and integrated circuit for secure encryption and decryption |
| US9558755B1 (en) | 2010-05-20 | 2017-01-31 | Knowles Electronics, Llc | Noise suppression assisted automatic speech recognition |
| US8725506B2 (en) * | 2010-06-30 | 2014-05-13 | Intel Corporation | Speech audio processing |
| KR101247652B1 (ko) * | 2011-08-30 | 2013-04-01 | 광주과학기술원 | 잡음 제거 장치 및 방법 |
| US8880393B2 (en) * | 2012-01-27 | 2014-11-04 | Mitsubishi Electric Research Laboratories, Inc. | Indirect model-based speech enhancement |
| US9076446B2 (en) * | 2012-03-22 | 2015-07-07 | Qiguang Lin | Method and apparatus for robust speaker and speech recognition |
| CN103325386B (zh) | 2012-03-23 | 2016-12-21 | 杜比实验室特许公司 | 用于信号传输控制的方法和系统 |
| US9640194B1 (en) | 2012-10-04 | 2017-05-02 | Knowles Electronics, Llc | Noise suppression for speech processing based on machine-learning mask estimation |
| US8958509B1 (en) | 2013-01-16 | 2015-02-17 | Richard J. Wiegand | System for sensor sensitivity enhancement and method therefore |
| CN110047500B (zh) * | 2013-01-29 | 2023-09-05 | 弗劳恩霍夫应用研究促进协会 | 音频编码器、音频译码器及其方法 |
| CN110085243B (zh) * | 2013-07-18 | 2022-12-02 | 日本电信电话株式会社 | 线性预测分析装置、线性预测分析方法以及记录介质 |
| US9536540B2 (en) | 2013-07-19 | 2017-01-03 | Knowles Electronics, Llc | Speech signal separation and synthesis based on auditory scene analysis and speech modeling |
| ES2908564T3 (es) * | 2014-07-28 | 2022-05-03 | Nippon Telegraph & Telephone | Codificación de una señal de sonido |
| CN106797512B (zh) | 2014-08-28 | 2019-10-25 | 美商楼氏电子有限公司 | 多源噪声抑制的方法、系统和非瞬时计算机可读存储介质 |
| US10650805B2 (en) * | 2014-09-11 | 2020-05-12 | Nuance Communications, Inc. | Method for scoring in an automatic speech recognition system |
| US9984682B1 (en) * | 2016-03-30 | 2018-05-29 | Educational Testing Service | Computer-implemented systems and methods for automatically generating an assessment of oral recitations of assessment items |
| US10796715B1 (en) * | 2016-09-01 | 2020-10-06 | Arizona Board Of Regents On Behalf Of Arizona State University | Speech analysis algorithmic system and method for objective evaluation and/or disease detection |
| CN106448649B (zh) * | 2016-09-26 | 2019-10-18 | 郑州云海信息技术有限公司 | 一种多电子降噪装置集中控制方法、装置及其系统 |
| JP6860901B2 (ja) * | 2017-02-28 | 2021-04-21 | 国立研究開発法人情報通信研究機構 | 学習装置、音声合成システムおよび音声合成方法 |
| EP3392884A1 (de) * | 2017-04-21 | 2018-10-24 | audEERING GmbH | Verfahren zur automatischen inferenz des affektischen zustands und system zur automatischen inferenz des affektischen zustands |
| CN109599102A (zh) * | 2018-10-24 | 2019-04-09 | 慈中华 | 识别经络状态的方法及装置 |
| US11437050B2 (en) * | 2019-09-09 | 2022-09-06 | Qualcomm Incorporated | Artificial intelligence based audio coding |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720861A (en) * | 1985-12-24 | 1988-01-19 | Itt Defense Communications A Division Of Itt Corporation | Digital speech coding circuit |
| DE3639753A1 (de) * | 1986-11-21 | 1988-06-01 | Inst Rundfunktechnik Gmbh | Verfahren zum uebertragen digitalisierter tonsignale |
| US5285522A (en) * | 1987-12-03 | 1994-02-08 | The Trustees Of The University Of Pennsylvania | Neural networks for acoustical pattern recognition |
| IL84948A0 (en) * | 1987-12-25 | 1988-06-30 | D S P Group Israel Ltd | Noise reduction system |
| GB8801014D0 (en) * | 1988-01-18 | 1988-02-17 | British Telecomm | Noise reduction |
| US5255342A (en) * | 1988-12-20 | 1993-10-19 | Kabushiki Kaisha Toshiba | Pattern recognition system and method using neural network |
| US5091945A (en) * | 1989-09-28 | 1992-02-25 | At&T Bell Laboratories | Source dependent channel coding with error protection |
| US5185800A (en) * | 1989-10-13 | 1993-02-09 | Centre National D'etudes Des Telecommunications | Bit allocation device for transformed digital audio broadcasting signals with adaptive quantization based on psychoauditive criterion |
| EP0435282B1 (de) * | 1989-12-28 | 1997-04-23 | Sharp Kabushiki Kaisha | Spracherkennungseinrichtung |
| JP2764343B2 (ja) * | 1990-09-07 | 1998-06-11 | 富士通株式会社 | 節／句境界抽出方式 |
| CN1036886C (zh) * | 1990-09-28 | 1997-12-31 | 菲利浦电子有限公司 | 对模拟信号编码的方法和系统 |
| US5179594A (en) * | 1991-06-12 | 1993-01-12 | Motorola, Inc. | Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook |
| US5265190A (en) * | 1991-05-31 | 1993-11-23 | Motorola, Inc. | CELP vocoder with efficient adaptive codebook search |
| JP3003276B2 (ja) * | 1991-06-19 | 2000-01-24 | 松下電器産業株式会社 | 信号解析装置 |
| JPH05197389A (ja) * | 1991-08-13 | 1993-08-06 | Toshiba Corp | 音声認識装置 |
| US5412735A (en) * | 1992-02-27 | 1995-05-02 | Central Institute For The Deaf | Adaptive noise reduction circuit for a sound reproduction system |
| US5495555A (en) * | 1992-06-01 | 1996-02-27 | Hughes Aircraft Company | High quality low bit rate celp-based speech codec |
| US5513297A (en) * | 1992-07-10 | 1996-04-30 | At&T Corp. | Selective application of speech coding techniques to input signal segments |
| FR2697101B1 (fr) * | 1992-10-21 | 1994-11-25 | Sextant Avionique | Procédé de détection de la parole. |
| IT1270919B (it) * | 1993-05-05 | 1997-05-16 | Cselt Centro Studi Lab Telecom | Sistema per il riconoscimento di parole isolate indipendente dal parlatore mediante reti neurali |
| JPH06348293A (ja) * | 1993-06-10 | 1994-12-22 | Hitachi Ltd | 音声情報分析装置 |
| CA2124713C (en) * | 1993-06-18 | 1998-09-22 | Willem Bastiaan Kleijn | Long term predictor |
| US5528728A (en) * | 1993-07-12 | 1996-06-18 | Kabushiki Kaisha Meidensha | Speaker independent speech recognition system and method using neural network and DTW matching technique |
| US5717823A (en) * | 1994-04-14 | 1998-02-10 | Lucent Technologies Inc. | Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders |
| JP2964879B2 (ja) * | 1994-08-22 | 1999-10-18 | 日本電気株式会社 | ポストフィルタ |
| US5598505A (en) * | 1994-09-30 | 1997-01-28 | Apple Computer, Inc. | Cepstral correction vector quantizer for speech recognition |
| JP3328080B2 (ja) * | 1994-11-22 | 2002-09-24 | 沖電気工業株式会社 | コード励振線形予測復号器 |
| US5774846A (en) * | 1994-12-19 | 1998-06-30 | Matsushita Electric Industrial Co., Ltd. | Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus |
| US5706395A (en) * | 1995-04-19 | 1998-01-06 | Texas Instruments Incorporated | Adaptive weiner filtering using a dynamic suppression factor |
| US5774837A (en) * | 1995-09-13 | 1998-06-30 | Voxware, Inc. | Speech coding system and method using voicing probability determination |
| EP0788091A3 (de) * | 1996-01-31 | 1999-02-24 | Kabushiki Kaisha Toshiba | Verfahren und Vorrichtung zur Sprachkodierung und -dekodierung |
-
1995
- 1995-11-20 US US08/559,667 patent/US5774846A/en not_active Expired - Lifetime
- 1995-11-27 EP EP03024767A patent/EP1391879A3/de not_active Withdrawn
- 1995-11-27 EP EP03024766A patent/EP1391878A3/de not_active Withdrawn
- 1995-11-27 EP EP95118647A patent/EP0718820B1/de not_active Expired - Lifetime
- 1995-11-27 DE DE69532879T patent/DE69532879T2/de not_active Expired - Lifetime
-
1998
- 1998-04-14 US US09/059,568 patent/US6067518A/en not_active Expired - Lifetime
-
1999
- 1999-12-30 US US09/475,248 patent/US6167373A/en not_active Expired - Lifetime
- 1999-12-30 US US09/475,249 patent/US6205421B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69532879D1 (de) | 2004-05-19 |
| EP1391879A3 (de) | 2011-02-16 |
| EP1391878A3 (de) | 2011-02-09 |
| EP0718820A2 (de) | 1996-06-26 |
| EP0718820B1 (de) | 2004-04-14 |
| US5774846A (en) | 1998-06-30 |
| EP1391878A2 (de) | 2004-02-25 |
| US6067518A (en) | 2000-05-23 |
| US6167373A (en) | 2000-12-26 |
| EP0718820A3 (de) | 1998-06-03 |
| US6205421B1 (en) | 2001-03-20 |
| EP1391879A2 (de) | 2004-02-25 |
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Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |