IT1180126B - Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante tecniche di quantizzazione vettoriale - Google Patents

Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante tecniche di quantizzazione vettoriale

Info

Publication number
IT1180126B
IT1180126B IT68134/84A IT6813484A IT1180126B IT 1180126 B IT1180126 B IT 1180126B IT 68134/84 A IT68134/84 A IT 68134/84A IT 6813484 A IT6813484 A IT 6813484A IT 1180126 B IT1180126 B IT 1180126B
Authority
IT
Italy
Prior art keywords
vectors
chosen
coding
quantized
filter
Prior art date
Application number
IT68134/84A
Other languages
English (en)
Italian (it)
Other versions
IT8468134A0 (it
IT8468134A1 (it
Inventor
Maurizio Copperi
Daniele Sereno
Original Assignee
Cselt Centro Studi Lab Telecom
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 Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Priority to IT68134/84A priority Critical patent/IT1180126B/it
Publication of IT8468134A0 publication Critical patent/IT8468134A0/it
Priority to US06/779,089 priority patent/US4791670A/en
Priority to JP60250992A priority patent/JPS61121616A/ja
Priority to CA000495036A priority patent/CA1241116A/en
Priority to DE198585114366T priority patent/DE186763T1/de
Priority to EP85114366A priority patent/EP0186763B1/en
Priority to DE8585114366T priority patent/DE3569165D1/de
Publication of IT8468134A1 publication Critical patent/IT8468134A1/it
Application granted granted Critical
Publication of IT1180126B publication Critical patent/IT1180126B/it

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

Priority Applications (7)

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
US06/779,089 US4791670A (en) 1984-11-13 1985-09-20 Method of and device for speech signal coding and decoding by vector quantization techniques
JP60250992A JPS61121616A (ja) 1984-11-13 1985-11-11 ベクトル量子化法によつて音声信号を符号化、復号化するための方法と装置
CA000495036A CA1241116A (en) 1984-11-13 1985-11-12 Method of and device for speech signal coding and decoding by vector quantization techniques
DE198585114366T DE186763T1 (de) 1984-11-13 1985-11-12 Verfahren und einrichtung zur kodierung und dekodierung von sprachsignalen durch vektorquantisierung.
EP85114366A EP0186763B1 (en) 1984-11-13 1985-11-12 Method of and device for speech signal coding and decoding by vector quantization techniques
DE8585114366T DE3569165D1 (en) 1984-11-13 1985-11-12 Method of and device for speech signal coding and decoding by vector quantization techniques

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
IT8468134A0 IT8468134A0 (it) 1984-11-13
IT8468134A1 IT8468134A1 (it) 1986-05-13
IT1180126B true IT1180126B (it) 1987-09-23

Family

ID=11308080

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (6)

Country Link
US (1) US4791670A (enExample)
EP (1) EP0186763B1 (enExample)
JP (1) JPS61121616A (enExample)
CA (1) CA1241116A (enExample)
DE (2) DE186763T1 (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
AU2003264322A1 (en) * 2003-09-17 2005-04-06 Beijing E-World Technology Co., Ltd. Method and device of multi-resolution vector quantilization for audio encoding and decoding
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
US4791670A (en) 1988-12-13
DE186763T1 (de) 1986-12-18
IT8468134A0 (it) 1984-11-13
JPS61121616A (ja) 1986-06-09
DE3569165D1 (en) 1989-05-03
EP0186763B1 (en) 1989-03-29
EP0186763A1 (en) 1986-07-09
IT8468134A1 (it) 1986-05-13
CA1241116A (en) 1988-08-23
JPH0563000B2 (enExample) 1993-09-09

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