CA1241116A - Method of and device for speech signal coding and decoding by vector quantization techniques - Google Patents

Method of and device for speech signal coding and decoding by vector quantization techniques

Info

Publication number
CA1241116A
CA1241116A CA000495036A CA495036A CA1241116A CA 1241116 A CA1241116 A CA 1241116A CA 000495036 A CA000495036 A CA 000495036A CA 495036 A CA495036 A CA 495036A CA 1241116 A CA1241116 A CA 1241116A
Authority
CA
Canada
Prior art keywords
vectors
vector
residual
quantized
filter
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
Application number
CA000495036A
Other languages
English (en)
French (fr)
Inventor
Maurizio Copperi
Daniele Sereno
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.)
TIM SpA
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni SpA
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 CSELT Centro Studi e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Application granted granted Critical
Publication of CA1241116A publication Critical patent/CA1241116A/en
Expired 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS 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)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
CA000495036A 1984-11-13 1985-11-12 Method of and device for speech signal coding and decoding by vector quantization techniques Expired CA1241116A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT68134/84A IT1180126B (it) 1984-11-13 1984-11-13 Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante tecniche di quantizzazione vettoriale
IT68134-A/84 1984-11-13

Publications (1)

Publication Number Publication Date
CA1241116A true CA1241116A (en) 1988-08-23

Family

ID=11308080

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000495036A Expired CA1241116A (en) 1984-11-13 1985-11-12 Method of and device for speech signal coding and decoding by vector quantization techniques

Country Status (6)

Country Link
US (1) US4791670A (enExample)
EP (1) EP0186763B1 (enExample)
JP (1) JPS61121616A (enExample)
CA (1) CA1241116A (enExample)
DE (2) DE3569165D1 (enExample)
IT (1) IT1180126B (enExample)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1195350B (it) * 1986-10-21 1988-10-12 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante estrazione di para metri e tecniche di quantizzazione vettoriale
JPH01238229A (ja) * 1988-03-17 1989-09-22 Sony Corp デイジタル信号処理装置
EP0401452B1 (en) * 1989-06-07 1994-03-23 International Business Machines Corporation Low-delay low-bit-rate speech coder
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
JPH04264597A (ja) * 1991-02-20 1992-09-21 Fujitsu Ltd 音声符号化装置および音声復号装置
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
US5255339A (en) * 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
CA2078927C (en) * 1991-09-25 1997-01-28 Katsushi Seza Code-book driven vocoder device with voice source generator
FR2690551B1 (fr) * 1991-10-15 1994-06-03 Thomson Csf Procede de quantification d'un filtre predicteur pour vocodeur a tres faible debit.
US5357567A (en) * 1992-08-14 1994-10-18 Motorola, Inc. Method and apparatus for volume switched gain control
JP2746033B2 (ja) * 1992-12-24 1998-04-28 日本電気株式会社 音声復号化装置
JP3321976B2 (ja) * 1994-04-01 2002-09-09 富士通株式会社 信号処理装置および信号処理方法
JPH08179796A (ja) * 1994-12-21 1996-07-12 Sony Corp 音声符号化方法
GB2300548B (en) * 1995-05-02 2000-01-12 Motorola Ltd Method for a communications system
US5832131A (en) * 1995-05-03 1998-11-03 National Semiconductor Corporation Hashing-based vector quantization
FR2734389B1 (fr) * 1995-05-17 1997-07-18 Proust Stephane Procede d'adaptation du niveau de masquage du bruit dans un codeur de parole a analyse par synthese utilisant un filtre de ponderation perceptuelle a court terme
FR2741744B1 (fr) * 1995-11-23 1998-01-02 Thomson Csf Procede et dispositif d'evaluation de l'energie du signal de parole par sous bande pour vocodeur bas debits
JP2778567B2 (ja) * 1995-12-23 1998-07-23 日本電気株式会社 信号符号化装置及び方法
US6356213B1 (en) * 2000-05-31 2002-03-12 Lucent Technologies Inc. System and method for prediction-based lossless encoding
CN1839426A (zh) * 2003-09-17 2006-09-27 北京阜国数字技术有限公司 多分辨率矢量量化的音频编解码方法及装置
EP4253088B1 (en) 2022-03-28 2025-07-02 Sumitomo Rubber Industries, Ltd. Motorcycle tire

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595916B2 (ja) * 1975-02-13 1984-02-07 日本電気株式会社 音声分折合成装置
JPS5651637A (en) * 1979-10-04 1981-05-09 Toray Eng Co Ltd Gear inspecting device
JPS60116000A (ja) * 1983-11-28 1985-06-22 ケイディディ株式会社 音声符号化装置
US4670851A (en) * 1984-01-09 1987-06-02 Mitsubishi Denki Kabushiki Kaisha Vector quantizer
US4701954A (en) * 1984-03-16 1987-10-20 American Telephone And Telegraph Company, At&T Bell Laboratories Multipulse LPC speech processing arrangement

Also Published As

Publication number Publication date
EP0186763B1 (en) 1989-03-29
IT8468134A1 (it) 1986-05-13
IT1180126B (it) 1987-09-23
JPH0563000B2 (enExample) 1993-09-09
IT8468134A0 (it) 1984-11-13
EP0186763A1 (en) 1986-07-09
DE3569165D1 (en) 1989-05-03
US4791670A (en) 1988-12-13
DE186763T1 (de) 1986-12-18
JPS61121616A (ja) 1986-06-09

Similar Documents

Publication Publication Date Title
CA1241116A (en) Method of and device for speech signal coding and decoding by vector quantization techniques
CA1292805C (en) Method of and device for speech signal coding and decoding by parameter extraction and vector quantization techniques
US5734789A (en) Voiced, unvoiced or noise modes in a CELP vocoder
CA2031006C (en) Near-toll quality 4.8 kbps speech codec
Chen High-quality 16 kb/s speech coding with a one-way delay less than 2 ms
EP0516621B1 (en) Dynamic codebook for efficient speech coding based on algebraic codes
US6233550B1 (en) Method and apparatus for hybrid coding of speech at 4kbps
US4360708A (en) Speech processor having speech analyzer and synthesizer
CA1333425C (en) Communication system capable of improving a speech quality by classifying speech signals
WO1980002211A1 (en) Residual excited predictive speech coding system
JP2004514182A (ja) 広帯域信号コーディング用の代数コードブック中のパルス位置と符号の索引付け方法
EP0342687B1 (en) Coded speech communication system having code books for synthesizing small-amplitude components
WO1985004276A1 (en) Multipulse lpc speech processing arrangement
Marques et al. Harmonic coding at 4.8 kb/s
US5027405A (en) Communication system capable of improving a speech quality by a pair of pulse producing units
US5570453A (en) Method for generating a spectral noise weighting filter for use in a speech coder
Singhal et al. Optimizing LPC filter parameters for multi-pulse excitation
US5692101A (en) Speech coding method and apparatus using mean squared error modifier for selected speech coder parameters using VSELP techniques
Chung et al. A 4.8 k bps homomorphic vocoder using analysis-by-synthesis excitation analysis
JP3103108B2 (ja) 音声符号化装置
GB2352949A (en) Speech coder for communications unit
JP2560486B2 (ja) マルチパルス符号化装置
Un et al. A 4800 bps LPC vocoder with improved excitation
Martins et al. Low bit rate LPC vocoders using vector quantization and interpolation
O’Shaughnessy “Speech Technology

Legal Events

Date Code Title Description
MKEX Expiry