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 (enExample)
EP (1) EP0500961B1 (enExample)
JP (1) JP3112681B2 (enExample)
CA (1) CA2068526C (enExample)
DE (1) DE69129329T2 (enExample)
WO (1) WO1992005541A1 (enExample)

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
EP0964393A1 (en) * 1990-12-21 1999-12-15 BRITISH TELECOMMUNICATIONS public limited company 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
DE69426860T2 (de) * 1993-12-10 2001-07-19 Nec Corp., Tokio/Tokyo Sprachcodierer und Verfahren zum Suchen von Codebüchern
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
AU767779B2 (en) * 1995-10-20 2003-11-27 Facebook, Inc. Repetitive sound compression system
WO1997015046A1 (en) * 1995-10-20 1997-04-24 America Online, 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 (enExample) * 1996-02-15 1997-10-01 Philips Electronics Nv
KR100455970B1 (ko) * 1996-02-15 2004-12-31 코닌클리케 필립스 일렉트로닉스 엔.브이. 복잡성이감소된신호전송시스템,전송기및전송방법,인코더및코딩방법
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
US6714907B2 (en) 1998-08-24 2004-03-30 Mindspeed Technologies, Inc. Codebook structure and search for speech coding
US6173257B1 (en) * 1998-08-24 2001-01-09 Conexant Systems, Inc Completed fixed codebook for speech encoder
US6556966B1 (en) * 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
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
US6842733B1 (en) 2000-09-15 2005-01-11 Mindspeed Technologies, Inc. Signal processing system for filtering spectral content of a signal for speech coding
US6850884B2 (en) * 2000-09-15 2005-02-01 Mindspeed Technologies, Inc. Selection of coding parameters based on spectral content of a speech signal
CN1202514C (zh) * 2000-11-27 2005-05-18 日本电信电话株式会社 编码和解码语音及其参数的方法、编码器、解码器
KR20060131793A (ko) * 2003-12-26 2006-12-20 마츠시타 덴끼 산교 가부시키가이샤 음성ㆍ악음 부호화 장치 및 음성ㆍ악음 부호화 방법
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
EP0331857B1 (en) * 1988-03-08 1992-05-20 International Business Machines Corporation Improved low bit rate voice coding method and system
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
DE69129329D1 (de) 1998-06-04
EP0500961A1 (en) 1992-09-02
DE69129329T2 (de) 1998-09-24
JP3112681B2 (ja) 2000-11-27
EP0500961B1 (en) 1998-04-29
EP0500961A4 (enExample) 1995-01-11
WO1992005541A1 (en) 1992-04-02
US5323486A (en) 1994-06-21
CA2068526A1 (en) 1992-03-15

Similar Documents

Publication Publication Date Title
EP0500961B1 (en) Voice coding system
JPWO1992005541A1 (ja) 音声符号化方式
JP4743963B2 (ja) 複数チャネル信号の符号化及び復号化
US4868867A (en) Vector excitation speech or audio coder for transmission or storage
EP1224662B1 (en) Variable bit-rate celp coding of speech with phonetic classification
Atal High-quality speech at low bit rates: Multi-pulse and stochastically excited linear predictive coders
US7065338B2 (en) Method, device and program for coding and decoding acoustic parameter, and method, device and program for coding and decoding sound
US20050114123A1 (en) Speech processing system and method
JPH0771045B2 (ja) 音声符号化方法、音声復号方法、およびこれらを使用した通信方法
KR100465316B1 (ko) 음성 부호화기 및 이를 이용한 음성 부호화 방법
JP3095133B2 (ja) 音響信号符号化方法
US5864650A (en) Speech encoding method and apparatus using tree-structure delta code book
JPWO1994007239A1 (ja) 音声符号化方法及び装置
JP2943983B1 (ja) 音響信号の符号化方法、復号方法、そのプログラム記録媒体、およびこれに用いる符号帳
JP3916934B2 (ja) 音響パラメータ符号化、復号化方法、装置及びプログラム、音響信号符号化、復号化方法、装置及びプログラム、音響信号送信装置、音響信号受信装置
JP3579276B2 (ja) 音声符号化／復号化方法
JP3071012B2 (ja) 音声伝送方式
JP3984048B2 (ja) 音声／音響信号の符号化方法及び電子装置
EP1359567A1 (en) Gradient descent optimization of linear prediction coefficients for speech coders
JP3092436B2 (ja) 音声符号化装置
JP3192051B2 (ja) 音声符号化装置
JP3010655B2 (ja) 圧縮符号化装置及び方法、並びに復号装置及び方法
CA1202419A (en) Speech encoder
Yuan The weighted sum of the line spectrum pair for noisy speech
JP3984021B2 (ja) 音声／音響信号の符号化方法及び電子装置

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20080917