EP0454552A3 - Method and apparatus for low bitrate speech coding - Google Patents

Method and apparatus for low bitrate speech coding Download PDF

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Publication number
EP0454552A3
EP0454552A3 EP19910401051 EP91401051A EP0454552A3 EP 0454552 A3 EP0454552 A3 EP 0454552A3 EP 19910401051 EP19910401051 EP 19910401051 EP 91401051 A EP91401051 A EP 91401051A EP 0454552 A3 EP0454552 A3 EP 0454552A3
Authority
EP
European Patent Office
Prior art keywords
speech coding
low bitrate
bitrate speech
low
coding
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.)
Withdrawn
Application number
EP19910401051
Other languages
French (fr)
Other versions
EP0454552A2 (en
Inventor
Benoit Mouy
Pierre 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
Publication of EP0454552A2 publication Critical patent/EP0454552A2/en
Publication of EP0454552A3 publication Critical patent/EP0454552A3/en
Withdrawn legal-status Critical Current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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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)
EP19910401051 1990-04-27 1991-04-19 Method and apparatus for low bitrate speech coding Withdrawn EP0454552A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005400 1990-04-27
FR9005400A FR2661541A1 (en) 1990-04-27 1990-04-27 METHOD AND DEVICE FOR CODING LOW SPEECH FLOW

Publications (2)

Publication Number Publication Date
EP0454552A2 EP0454552A2 (en) 1991-10-30
EP0454552A3 true EP0454552A3 (en) 1992-01-02

Family

ID=9396170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910401051 Withdrawn EP0454552A3 (en) 1990-04-27 1991-04-19 Method and apparatus for low bitrate speech coding

Country Status (5)

Country Link
EP (1) EP0454552A3 (en)
JP (1) JPH05507796A (en)
CA (1) CA2079884A1 (en)
FR (1) FR2661541A1 (en)
WO (1) WO1991017541A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684225A1 (en) * 1991-11-22 1993-05-28 Thomson Csf METHOD FOR QUANTIFYING SPEECH SIGNAL ENERGY IN A VOCODER AT VERY LOW SPEED.
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701955A (en) * 1982-10-21 1987-10-20 Nec Corporation Variable frame length vocoder
US4852179A (en) * 1987-10-05 1989-07-25 Motorola, Inc. Variable frame rate, fixed bit rate vocoding method
EP0428445A1 (en) * 1989-11-14 1991-05-22 Thomson-Csf Method and apparatus for coding of predictive filters in very low bitrate vocoders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701955A (en) * 1982-10-21 1987-10-20 Nec Corporation Variable frame length vocoder
US4852179A (en) * 1987-10-05 1989-07-25 Motorola, Inc. Variable frame rate, fixed bit rate vocoding method
EP0428445A1 (en) * 1989-11-14 1991-05-22 Thomson-Csf Method and apparatus for coding of predictive filters in very low bitrate vocoders

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
1977 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH & SIGNAL PROCESSING, Hartford, Connecticut, 9-11 mai 1977, pages 219-222, IEEE, New York, US; R. VISWANATHAN et al.: "The application of a functional perceptual model of speech to variable-rate LPC systems" *
1978 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH & SIGNAL PROCESSING, Tulsa, Oklahoma, 10-12 avril 1978, pages 458-461, IEEE, New York, US; E. McLARNON: "A method for reducing the transmission rate of a channel vocoder by using frame interpolation" *
ICASSP '83 - IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, Boston, 14-16 avril 1983, vol. 1, pages 69-72, IEEE, New York, US; R.M. SCHWARTZ et al.: "A comparison of methods for 300-400 B/S vocoders" *

Also Published As

Publication number Publication date
WO1991017541A1 (en) 1991-11-14
EP0454552A2 (en) 1991-10-30
CA2079884A1 (en) 1991-10-28
JPH05507796A (en) 1993-11-04
FR2661541A1 (en) 1991-10-31

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