EP0341129A1 - Verfahren und Einrichtung zur Kodierung von Sprachsignalenergie in Vokodern mit sehr niedriger Bitrate - Google Patents

Verfahren und Einrichtung zur Kodierung von Sprachsignalenergie in Vokodern mit sehr niedriger Bitrate Download PDF

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Publication number
EP0341129A1
EP0341129A1 EP89401169A EP89401169A EP0341129A1 EP 0341129 A1 EP0341129 A1 EP 0341129A1 EP 89401169 A EP89401169 A EP 89401169A EP 89401169 A EP89401169 A EP 89401169A EP 0341129 A1 EP0341129 A1 EP 0341129A1
Authority
EP
European Patent Office
Prior art keywords
vector
windows
vectors
energy
base
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
EP89401169A
Other languages
English (en)
French (fr)
Other versions
EP0341129B1 (de
Inventor
Denis Rochette
Pierre André 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.)
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Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0341129A1 publication Critical patent/EP0341129A1/de
Application granted granted Critical
Publication of EP0341129B1 publication Critical patent/EP0341129B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis

Definitions

  • the register 43 On each comparison the content of register 43 is updated by the result of the summation obtained at the output of the summing circuit 41 if this result is lower than the content existing in the register 43. In this way after each progression of the address counter 34, the register 43 keeps in memory the sum of the squares obtained from the summing circuit 41 which is the highest s small among all the sums already made since the beginning of the addressing of the estimated vectors in the memory 33. In parallel with each update of the content of the register 43 the content of the register 44 is replaced by the address of the corresponding vector which has been read from memory 33. The number of the VME vector coded on N bits is thus obtained directly in register 44.

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)
EP89401169A 1988-05-04 1989-04-25 Verfahren und Einrichtung zur Kodierung von Sprachsignalenergie in Vokodern mit sehr niedriger Bitrate Expired - Lifetime EP0341129B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806002 1988-05-04
FR8806002A FR2631146B1 (fr) 1988-05-04 1988-05-04 Procede et dispositif de codage de l'energie du signal vocal dans des vocodeurs a tres faibles debits

Publications (2)

Publication Number Publication Date
EP0341129A1 true EP0341129A1 (de) 1989-11-08
EP0341129B1 EP0341129B1 (de) 1993-06-23

Family

ID=9365992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401169A Expired - Lifetime EP0341129B1 (de) 1988-05-04 1989-04-25 Verfahren und Einrichtung zur Kodierung von Sprachsignalenergie in Vokodern mit sehr niedriger Bitrate

Country Status (7)

Country Link
US (1) US5016278A (de)
EP (1) EP0341129B1 (de)
JP (1) JPH01319100A (de)
CA (1) CA1312380C (de)
DE (1) DE68907267T2 (de)
ES (1) ES2041425T3 (de)
FR (1) FR2631146B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255339A (en) * 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5473731A (en) * 1993-07-20 1995-12-05 Intel Corporation Lattice based dynamic programming classification system
FR2738383B1 (fr) * 1995-09-05 1997-10-03 Thomson Csf Procede de quantification vectorielle de vocodeurs bas debit
FR2778041A1 (fr) * 1998-04-24 1999-10-29 Thomson Csf Procede de neutrodynage du tube d'un emetteur
US6192283B1 (en) 1998-07-31 2001-02-20 Siemens Energy & Automation, Inc. Method and apparatus for adaptive control of a system or device
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608244A1 (de) * 1976-02-28 1977-09-15 Licentia Gmbh Verfahren zur analyse und synthese des differenzsignals bei praediktionsvocodern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608244A1 (de) * 1976-02-28 1977-09-15 Licentia Gmbh Verfahren zur analyse und synthese des differenzsignals bei praediktionsvocodern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROCEEDINGS OF THE IEEE, vol. 73, no. 11, novembre 1985, pages 1551-1588, IEEE, New York, US; J. MAKHOUL et al.: "Vector quantization in speech coding" *

Also Published As

Publication number Publication date
EP0341129B1 (de) 1993-06-23
DE68907267T2 (de) 1993-09-30
CA1312380C (fr) 1993-01-05
FR2631146A1 (fr) 1989-11-10
ES2041425T3 (es) 1993-11-16
US5016278A (en) 1991-05-14
FR2631146B1 (fr) 1991-05-10
JPH01319100A (ja) 1989-12-25
DE68907267D1 (de) 1993-07-29

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