FR2738383B1 - Procede de quantification vectorielle de vocodeurs bas debit - Google Patents

Procede de quantification vectorielle de vocodeurs bas debit

Info

Publication number
FR2738383B1
FR2738383B1 FR9510393A FR9510393A FR2738383B1 FR 2738383 B1 FR2738383 B1 FR 2738383B1 FR 9510393 A FR9510393 A FR 9510393A FR 9510393 A FR9510393 A FR 9510393A FR 2738383 B1 FR2738383 B1 FR 2738383B1
Authority
FR
France
Prior art keywords
vocoders
low flow
vector quantification
quantification
vector
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
FR9510393A
Other languages
English (en)
Other versions
FR2738383A1 (fr
Inventor
Pierre Andre Laurent
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR9510393A priority Critical patent/FR2738383B1/fr
Priority to PCT/FR1996/001347 priority patent/WO1997009711A1/fr
Priority to US09/029,254 priority patent/US6016469A/en
Priority to DE69602963T priority patent/DE69602963T2/de
Priority to EP96930202A priority patent/EP0850470B1/fr
Publication of FR2738383A1 publication Critical patent/FR2738383A1/fr
Application granted granted Critical
Publication of FR2738383B1 publication Critical patent/FR2738383B1/fr
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
    • G10L19/02—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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (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)
FR9510393A 1995-09-05 1995-09-05 Procede de quantification vectorielle de vocodeurs bas debit Expired - Fee Related FR2738383B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9510393A FR2738383B1 (fr) 1995-09-05 1995-09-05 Procede de quantification vectorielle de vocodeurs bas debit
PCT/FR1996/001347 WO1997009711A1 (fr) 1995-09-05 1996-09-04 Procede de quantification vectorielle de vocodeurs bas debit
US09/029,254 US6016469A (en) 1995-09-05 1996-09-04 Process for the vector quantization of low bit rate vocoders
DE69602963T DE69602963T2 (de) 1995-09-05 1996-09-04 Vektorquantisierungsverfahren für vokoder mit niedriger datenrate
EP96930202A EP0850470B1 (fr) 1995-09-05 1996-09-04 Procede de quantification vectorielle de vocodeurs bas debit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9510393A FR2738383B1 (fr) 1995-09-05 1995-09-05 Procede de quantification vectorielle de vocodeurs bas debit

Publications (2)

Publication Number Publication Date
FR2738383A1 FR2738383A1 (fr) 1997-03-07
FR2738383B1 true FR2738383B1 (fr) 1997-10-03

Family

ID=9482279

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9510393A Expired - Fee Related FR2738383B1 (fr) 1995-09-05 1995-09-05 Procede de quantification vectorielle de vocodeurs bas debit

Country Status (5)

Country Link
US (1) US6016469A (fr)
EP (1) EP0850470B1 (fr)
DE (1) DE69602963T2 (fr)
FR (1) FR2738383B1 (fr)
WO (1) WO1997009711A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778041A1 (fr) * 1998-04-24 1999-10-29 Thomson Csf Procede de neutrodynage du tube d'un emetteur
FR2788390B1 (fr) 1999-01-12 2003-05-30 Thomson Csf Emetteur de radiodiffusion en ondes courtes a haut rendement optimise pour les emissions de type numerique
FR2790343B1 (fr) 1999-02-26 2001-06-01 Thomson Csf Systeme pour l'estimation du gain complexe d'un canal de transmission
FR2799592B1 (fr) 1999-10-12 2003-09-26 Thomson Csf Procede de construction et de codage simple et systematique de codes ldpc
FR2815492B1 (fr) * 2000-10-13 2003-02-14 Thomson Csf Systeme et procede de radiodiffusion assurant une continuite de service
FR2826208B1 (fr) 2001-06-19 2003-12-05 Thales Sa Systeme et procede de transmission d'un signal audio ou phonie
FR2826492B1 (fr) * 2001-06-22 2003-09-26 Thales Sa Procede et systeme de pre et de post-traitement d'un signal audio pour la transmission sur un canal fortement perturbe
FR2832879B1 (fr) * 2001-11-23 2006-08-18 Thales Sa Procede et egalisation par segmentations des donnees
FR2832877B1 (fr) * 2001-11-23 2006-08-18 Thales Sa Procede et dispositif d'egalisation par blocs avec interpolation amelioree
FR2832880B1 (fr) * 2001-11-23 2004-04-09 Thales Sa Procede et dispositif d'egalisation par blocs avec adaptation au canal de transmission

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283592A1 (fr) * 1974-08-27 1976-03-26 Thomson Csf Dispositif extracteur de synchronisation et systeme de transmission d'informations comportant un tel dispositif
FR2431229A1 (fr) * 1978-07-12 1980-02-08 Thomson Csf Dispositif de demodulation de signaux modules en deplacement de frequence et systeme de transmission comportant un tel dispositif
FR2546001B1 (fr) * 1983-05-10 1985-07-05 Thomson Csf Demodulateur de signaux, a enveloppe constante et phase continue, modules angulairement par un train de symboles binaires
FR2604318B1 (fr) * 1986-09-23 1989-03-31 Thomson Csf Procede et dispositif de synchronisation symbole et leur application a la demodulation symbole de messages numeriques
FR2605769B1 (fr) * 1986-10-22 1988-12-09 Thomson Csf Operateur polynomial dans les corps de galois et processeur de traitement de signal numerique comportant un tel operateur
FR2605818B1 (fr) * 1986-10-27 1992-09-18 Thomson Csf Codeur-decodeur algebrique de codes en blocs reed solomon et bch, applicable aux telecommunications numeriques
FR2607987B1 (fr) * 1986-12-05 1989-02-10 Thomson Csf Procede et dispositif de modulation et de demodulation a plusieurs etats, a niveau de protection ajustable
US4907276A (en) * 1988-04-05 1990-03-06 The Dsp Group (Israel) Ltd. Fast search method for vector quantizer communication and pattern recognition systems
FR2631147B1 (fr) * 1988-05-04 1991-02-08 Thomson Csf Procede et dispositif de detection de signaux vocaux
FR2631146B1 (fr) * 1988-05-04 1991-05-10 Thomson Csf Procede et dispositif de codage de l'energie du signal vocal dans des vocodeurs a tres faibles debits
FR2635420B1 (fr) * 1988-07-19 1990-10-19 Thomson Csf Procede et dispositif de demodulation de signaux a enveloppe constante et phase continue modules angulairement par un train de symboles binaires, tolerant les derives de frequence
FR2654542B1 (fr) * 1989-11-14 1992-01-17 Thomson Csf Procede et dispositif de codage de filtres predicteurs de vocodeurs tres bas debit.
FR2670313A1 (fr) * 1990-12-11 1992-06-12 Thomson Csf Procede et dispositif pour l'evaluation de la periodicite et du voisement du signal de parole dans les vocodeurs a tres bas debit.
US5182773A (en) * 1991-03-22 1993-01-26 International Business Machines Corporation Speaker-independent label coding apparatus
FR2678407A1 (fr) * 1991-06-28 1992-12-31 Philips Electronique Lab Procede et dispositif avec un reseau neuronal pour classer des donnees, et appareil d'authentification de signature.
FR2690551B1 (fr) * 1991-10-15 1994-06-03 Thomson Csf Procede de quantification d'un filtre predicteur pour vocodeur a tres faible debit.
JP3163185B2 (ja) * 1992-11-27 2001-05-08 株式会社東芝 パターン認識装置およびパターン認識方法
CA2135629C (fr) * 1993-03-26 2000-02-08 Ira A. Gerson Quantificateur vectoriel a segments multiples pour un codeur de la parole utilisable dans un radiotelephone
US5715367A (en) * 1995-01-23 1998-02-03 Dragon Systems, Inc. Apparatuses and methods for developing and using models for speech recognition

Also Published As

Publication number Publication date
DE69602963D1 (de) 1999-07-22
EP0850470B1 (fr) 1999-06-16
EP0850470A1 (fr) 1998-07-01
US6016469A (en) 2000-01-18
DE69602963T2 (de) 1999-11-04
FR2738383A1 (fr) 1997-03-07
WO1997009711A1 (fr) 1997-03-13

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Legal Events

Date Code Title Description
ST Notification of lapse