CA2014279A1 - Appareil de codage de la parole - Google Patents

Appareil de codage de la parole

Info

Publication number
CA2014279A1
CA2014279A1 CA2014279A CA2014279A CA2014279A1 CA 2014279 A1 CA2014279 A1 CA 2014279A1 CA 2014279 A CA2014279 A CA 2014279A CA 2014279 A CA2014279 A CA 2014279A CA 2014279 A1 CA2014279 A1 CA 2014279A1
Authority
CA
Canada
Prior art keywords
code
codes
coding apparatus
speech coding
prediction parameter
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.)
Granted
Application number
CA2014279A
Other languages
English (en)
Other versions
CA2014279C (fr
Inventor
Fumio Amano
Tomohiko Taniguchi
Yoshinori Tanaka
Yasuji Ota
Shigeyuki Unagami
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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2014279A1 publication Critical patent/CA2014279A1/fr
Application granted granted Critical
Publication of CA2014279C publication Critical patent/CA2014279C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10L19/08—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 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
CA002014279A 1989-04-13 1990-04-10 Appareil de codage de la parole Expired - Fee Related CA2014279C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1093568A JPH02272500A (ja) 1989-04-13 1989-04-13 コード駆動音声符号化方式
JP1-093568 1989-04-13

Publications (2)

Publication Number Publication Date
CA2014279A1 true CA2014279A1 (fr) 1990-10-13
CA2014279C CA2014279C (fr) 1994-03-29

Family

ID=14085859

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002014279A Expired - Fee Related CA2014279C (fr) 1989-04-13 1990-04-10 Appareil de codage de la parole

Country Status (5)

Country Link
US (1) US5138662A (fr)
EP (1) EP0392517B1 (fr)
JP (1) JPH02272500A (fr)
CA (1) CA2014279C (fr)
DE (1) DE69013738T2 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230038A (en) * 1989-01-27 1993-07-20 Fielder Louis D Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
CA2078927C (fr) * 1991-09-25 1997-01-28 Katsushi Seza Vocodeur pilote par code a generateur de sources vocales
US5457783A (en) * 1992-08-07 1995-10-10 Pacific Communication Sciences, Inc. Adaptive speech coder having code excited linear prediction
FI95086C (fi) * 1992-11-26 1995-12-11 Nokia Mobile Phones Ltd Menetelmä puhesignaalin tehokkaaksi koodaamiseksi
US6009082A (en) 1993-01-08 1999-12-28 Multi-Tech Systems, Inc. Computer-based multifunction personal communication system with caller ID
US5617423A (en) 1993-01-08 1997-04-01 Multi-Tech Systems, Inc. Voice over data modem with selectable voice compression
US5754589A (en) 1993-01-08 1998-05-19 Multi-Tech Systems, Inc. Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
US5535204A (en) 1993-01-08 1996-07-09 Multi-Tech Systems, Inc. Ringdown and ringback signalling for a computer-based multifunction personal communications system
US5453986A (en) * 1993-01-08 1995-09-26 Multi-Tech Systems, Inc. Dual port interface for a computer-based multifunction personal communication system
US5546395A (en) * 1993-01-08 1996-08-13 Multi-Tech Systems, Inc. Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem
US5812534A (en) 1993-01-08 1998-09-22 Multi-Tech Systems, Inc. Voice over data conferencing for a computer-based personal communications system
US5864560A (en) 1993-01-08 1999-01-26 Multi-Tech Systems, Inc. Method and apparatus for mode switching in a voice over data computer-based personal communications system
US5452289A (en) * 1993-01-08 1995-09-19 Multi-Tech Systems, Inc. Computer-based multifunction personal communications system
FI96248C (fi) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
DE4315319C2 (de) * 1993-05-07 2002-11-14 Bosch Gmbh Robert Verfahren zur Aufbereitung von Daten, insbesondere von codierten Sprachsignalparametern
EP0803117A1 (fr) * 1993-08-27 1997-10-29 Pacific Communication Sciences, Inc. Codeur vocal adaptable a prediction lineaire a excitation par code
US5682386A (en) 1994-04-19 1997-10-28 Multi-Tech Systems, Inc. Data/voice/fax compression multiplexer
US5757801A (en) 1994-04-19 1998-05-26 Multi-Tech Systems, Inc. Advanced priority statistical multiplexer
US5890110A (en) * 1995-03-27 1999-03-30 The Regents Of The University Of California Variable dimension vector quantization
TW321810B (fr) * 1995-10-26 1997-12-01 Sony Co Ltd
JPH10247098A (ja) * 1997-03-04 1998-09-14 Mitsubishi Electric Corp 可変レート音声符号化方法、可変レート音声復号化方法
US5987405A (en) * 1997-06-24 1999-11-16 International Business Machines Corporation Speech compression by speech recognition
CN1192355C (zh) * 1999-11-16 2005-03-09 皇家菲利浦电子有限公司 宽带音频传输系统
US6760674B2 (en) * 2001-10-08 2004-07-06 Microchip Technology Incorporated Audio spectrum analyzer implemented with a minimum number of multiply operations
US7200552B2 (en) * 2002-04-29 2007-04-03 Ntt Docomo, Inc. Gradient descent optimization of linear prediction coefficients for speech coders
DE102006022346B4 (de) 2006-05-12 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalcodierung
US8077821B2 (en) * 2006-09-25 2011-12-13 Zoran Corporation Optimized timing recovery device and method using linear predictor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817157A (en) * 1988-01-07 1989-03-28 Motorola, Inc. Digital speech coder having improved vector excitation source

Also Published As

Publication number Publication date
US5138662A (en) 1992-08-11
DE69013738D1 (de) 1994-12-08
JPH02272500A (ja) 1990-11-07
EP0392517B1 (fr) 1994-11-02
CA2014279C (fr) 1994-03-29
EP0392517A2 (fr) 1990-10-17
EP0392517A3 (fr) 1991-05-15
DE69013738T2 (de) 1995-04-06

Similar Documents

Publication Publication Date Title
CA2014279A1 (fr) Appareil de codage de la parole
US5140638B1 (en) Speech coding system and a method of encoding speech
EP1262956A3 (fr) Procédé et dispositif de codage de la parole
EP0788091A3 (fr) Procédé et dispositif de codage et décodage de parole
PL311812A1 (en) Method of and apparatus for encoding information, method of and apparatus fro decoding information, method of transmitting information and information recording medium
PL316008A1 (en) Method of encoding speech signals
CA2024742A1 (fr) Appareil de codage de parols utilisant un codage multimode
CA2022677A1 (fr) Codeur a quantification vectorielle et decodeur a quantification vectorielle
CA2115185A1 (fr) Dispositif de codage de parametres vocaux utilisant le plus petit nombre de bits
EP0954853B1 (fr) Procede de codage d'un signal vocal
CA2005115A1 (fr) Codeur predictif lineaire excite par code a temps de retard bref pour les signaux vocaux ou audio
CA2015274A1 (fr) Appareil de codage vacal
EP0772185A3 (fr) Procédé et dispositif de décodage de la parole
KR980013436A (ko) 적응 변환 코딩 시스템, 적응 변환 디코딩 시스템 및 적응 변환 코딩/디코딩 시스템
CA2025455A1 (fr) Systeme de codification de la parole genetant a partir d'un signal de la parole numetisee, des parametres de codage predictif lineaires et des codes de controle
IL94119A (en) Digital voice recorder
AU679980B2 (en) Process for conditioning data, especially coded voice signal parameters
JP3010654B2 (ja) 圧縮符号化装置及び方法
JPS6337724A (ja) 符号化伝送装置
JP3088204B2 (ja) コード励振線形予測符号化装置及び復号化装置
CA2019801A1 (fr) Systeme et appareil de codage de paroles
US5761633A (en) Method of encoding and decoding speech signals
KR100389898B1 (ko) 음성부호화에 있어서 선스펙트럼쌍 계수의 양자화 방법
JPH01206400A (ja) 音声予測符号器
JPH0854900A (ja) ベクトル量子化による符号化復号化方式

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 19980414