CA2068526C - Speech coding system - Google Patents

Speech coding system

Info

Publication number
CA2068526C
CA2068526C CA002068526A CA2068526A CA2068526C CA 2068526 C CA2068526 C CA 2068526C CA 002068526 A CA002068526 A CA 002068526A CA 2068526 A CA2068526 A CA 2068526A CA 2068526 C CA2068526 C CA 2068526C
Authority
CA
Canada
Prior art keywords
vectors
delta
vector
code
computation
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 - Fee Related
Application number
CA002068526A
Other languages
English (en)
French (fr)
Other versions
CA2068526A1 (en
Inventor
Tomohiko Taniguchi
Mark Johnson
Yasuji Ohta
Hideaki Kurihara
Yoshinori Tanaka
Yoshihiro Sakai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP3127669A external-priority patent/JPH04352200A/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2068526A1 publication Critical patent/CA2068526A1/en
Application granted granted Critical
Publication of CA2068526C publication Critical patent/CA2068526C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G10L19/12—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
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0002—Codebook adaptations
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0007—Codebook element generation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0013—Codebook search algorithms
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0013—Codebook search algorithms
    • G10L2019/0014—Selection criteria for distances
    • 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
    • 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

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)
CA002068526A 1990-09-14 1991-09-17 Speech coding system Expired - Fee Related CA2068526C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP24417490 1990-09-14
JP2-244174 1990-09-14
JP3-127669 1991-05-30
JP3127669A JPH04352200A (ja) 1991-05-30 1991-05-30 音声符号化方式

Publications (2)

Publication Number Publication Date
CA2068526A1 CA2068526A1 (en) 1992-03-15
CA2068526C true CA2068526C (en) 1997-02-25

Family

ID=26463564

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002068526A Expired - Fee Related CA2068526C (en) 1990-09-14 1991-09-17 Speech coding system

Country Status (6)

Country Link
US (1) US5323486A (2)
EP (1) EP0500961B1 (2)
JP (1) JP3112681B2 (2)
CA (1) CA2068526C (2)
DE (1) DE69129329T2 (2)
WO (1) WO1992005541A1 (2)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992005541A1 (en) 1990-09-14 1992-04-02 Fujitsu Limited Voice coding system
JP3077944B2 (ja) * 1990-11-28 2000-08-21 シャープ株式会社 信号再生装置
GB2266822B (en) * 1990-12-21 1995-05-10 British Telecomm Speech coding
US5671327A (en) * 1991-10-21 1997-09-23 Kabushiki Kaisha Toshiba Speech encoding apparatus utilizing stored code data
JP3071012B2 (ja) 1991-12-09 2000-07-31 富士通株式会社 音声伝送方式
US5864650A (en) * 1992-09-16 1999-01-26 Fujitsu Limited Speech encoding method and apparatus using tree-structure delta code book
IT1257431B (it) * 1992-12-04 1996-01-16 Sip Procedimento e dispositivo per la quantizzazione dei guadagni dell'eccitazione in codificatori della voce basati su tecniche di analisi per sintesi
CA2102080C (en) * 1992-12-14 1998-07-28 Willem Bastiaan Kleijn Time shifting for generalized analysis-by-synthesis coding
JP2591430B2 (ja) * 1993-06-30 1997-03-19 日本電気株式会社 ベクトル量子化装置
JP2626492B2 (ja) * 1993-09-13 1997-07-02 日本電気株式会社 ベクトル量子化装置
US5462879A (en) * 1993-10-14 1995-10-31 Minnesota Mining And Manufacturing Company Method of sensing with emission quenching sensors
CA2137756C (en) * 1993-12-10 2000-02-01 Kazunori Ozawa Voice coder and a method for searching codebooks
JPH07168913A (ja) * 1993-12-14 1995-07-04 Chugoku Nippon Denki Software Kk 文字認識システム
JP3119063B2 (ja) * 1994-01-11 2000-12-18 富士通株式会社 符号情報処理方式並びにその符号装置及び復号装置
JP2956473B2 (ja) * 1994-04-21 1999-10-04 日本電気株式会社 ベクトル量子化装置
US5704003A (en) * 1995-09-19 1997-12-30 Lucent Technologies Inc. RCELP coder
DE69629485T2 (de) * 1995-10-20 2004-06-09 America Online, Inc. Kompressionsystem für sich wiederholende töne
AU767779B2 (en) * 1995-10-20 2003-11-27 Facebook, Inc. Repetitive sound compression system
JP3680380B2 (ja) * 1995-10-26 2005-08-10 ソニー株式会社 音声符号化方法及び装置
JP3707116B2 (ja) * 1995-10-26 2005-10-19 ソニー株式会社 音声復号化方法及び装置
TW317051B (2) * 1996-02-15 1997-10-01 Philips Electronics Nv
JP3970327B2 (ja) * 1996-02-15 2007-09-05 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ 複雑さが軽減された信号送信システム
US6038528A (en) * 1996-07-17 2000-03-14 T-Netix, Inc. Robust speech processing with affine transform replicated data
US6192336B1 (en) * 1996-09-30 2001-02-20 Apple Computer, Inc. Method and system for searching for an optimal codevector
US6161086A (en) * 1997-07-29 2000-12-12 Texas Instruments Incorporated Low-complexity speech coding with backward and inverse filtered target matching and a tree structured mutitap adaptive codebook search
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6556966B1 (en) * 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
US6173257B1 (en) * 1998-08-24 2001-01-09 Conexant Systems, Inc Completed fixed codebook for speech encoder
US6714907B2 (en) 1998-08-24 2004-03-30 Mindspeed Technologies, Inc. Codebook structure and search for speech coding
US6480822B2 (en) * 1998-08-24 2002-11-12 Conexant Systems, Inc. Low complexity random codebook structure
US6212496B1 (en) 1998-10-13 2001-04-03 Denso Corporation, Ltd. Customizing audio output to a user's hearing in a digital telephone
US6850884B2 (en) * 2000-09-15 2005-02-01 Mindspeed Technologies, Inc. Selection of coding parameters based on spectral content of a speech signal
US6842733B1 (en) 2000-09-15 2005-01-11 Mindspeed Technologies, Inc. Signal processing system for filtering spectral content of a signal for speech coding
DE60126149T8 (de) * 2000-11-27 2008-01-31 Nippon Telegraph And Telephone Corp. Verfahren, einrichtung und programm zum codieren und decodieren eines akustischen parameters und verfahren, einrichtung und programm zum codieren und decodieren von klängen
EP1688917A1 (en) * 2003-12-26 2006-08-09 Matsushita Electric Industries Co., Ltd. Voice/musical sound encoding device and voice/musical sound encoding method
KR20080052813A (ko) * 2006-12-08 2008-06-12 한국전자통신연구원 채널별 신호 분포 특성을 반영한 오디오 코딩 장치 및 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237519A (ja) * 1985-04-12 1986-10-22 Mitsubishi Electric Corp フレ−ム間適応ベクトル量子化符号化装置
JPS63240600A (ja) * 1987-03-28 1988-10-06 松下電器産業株式会社 ベクトル量子化方法
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
CA1337217C (en) * 1987-08-28 1995-10-03 Daniel Kenneth Freeman Speech coding
DE3871369D1 (de) * 1988-03-08 1992-06-25 Ibm Verfahren und einrichtung zur sprachkodierung mit niedriger datenrate.
JPH0365822A (ja) * 1989-08-04 1991-03-20 Fujitsu Ltd ベクトル量子化符号器及びベクトル量子化復号器
US5144671A (en) * 1990-03-15 1992-09-01 Gte Laboratories Incorporated Method for reducing the search complexity in analysis-by-synthesis coding
WO1992005541A1 (en) 1990-09-14 1992-04-02 Fujitsu Limited Voice coding system

Also Published As

Publication number Publication date
WO1992005541A1 (en) 1992-04-02
EP0500961A4 (2) 1995-01-11
JP3112681B2 (ja) 2000-11-27
US5323486A (en) 1994-06-21
DE69129329D1 (de) 1998-06-04
EP0500961B1 (en) 1998-04-29
EP0500961A1 (en) 1992-09-02
CA2068526A1 (en) 1992-03-15
DE69129329T2 (de) 1998-09-24

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Effective date: 20080917