FR2796193B1 - Procede et dispositif de codage audio - Google Patents

Procede et dispositif de codage audio

Info

Publication number
FR2796193B1
FR2796193B1 FR9908637A FR9908637A FR2796193B1 FR 2796193 B1 FR2796193 B1 FR 2796193B1 FR 9908637 A FR9908637 A FR 9908637A FR 9908637 A FR9908637 A FR 9908637A FR 2796193 B1 FR2796193 B1 FR 2796193B1
Authority
FR
France
Prior art keywords
cepstral
audio signal
spectrum
cepstral coefficients
fundamental frequency
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
FR9908637A
Other languages
English (en)
Other versions
FR2796193A1 (fr
Inventor
Francois Capman
Carlo Murgia
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.)
Nortel Networks France SAS
Original Assignee
Matra Nortel Communications SAS
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 Matra Nortel Communications SAS filed Critical Matra Nortel Communications SAS
Priority to FR9908637A priority Critical patent/FR2796193B1/fr
Priority to AT00949620T priority patent/ATE277402T1/de
Priority to DE60014084T priority patent/DE60014084D1/de
Priority to AU62919/00A priority patent/AU6291900A/en
Priority to PCT/FR2000/001905 priority patent/WO2001003117A1/fr
Priority to EP00949620A priority patent/EP1192618B1/fr
Publication of FR2796193A1 publication Critical patent/FR2796193A1/fr
Application granted granted Critical
Publication of FR2796193B1 publication Critical patent/FR2796193B1/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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR9908637A 1999-07-05 1999-07-05 Procede et dispositif de codage audio Expired - Fee Related FR2796193B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9908637A FR2796193B1 (fr) 1999-07-05 1999-07-05 Procede et dispositif de codage audio
AT00949620T ATE277402T1 (de) 1999-07-05 2000-07-04 Audiokodierung mit adaptiver lifterung
DE60014084T DE60014084D1 (de) 1999-07-05 2000-07-04 Audiokodierung mit adaptiver lifterung
AU62919/00A AU6291900A (en) 1999-07-05 2000-07-04 Audio coding with adaptive liftering
PCT/FR2000/001905 WO2001003117A1 (fr) 1999-07-05 2000-07-04 Codage audio avec liftrage adaptif
EP00949620A EP1192618B1 (fr) 1999-07-05 2000-07-04 Codage audio avec liftrage adaptif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9908637A FR2796193B1 (fr) 1999-07-05 1999-07-05 Procede et dispositif de codage audio

Publications (2)

Publication Number Publication Date
FR2796193A1 FR2796193A1 (fr) 2001-01-12
FR2796193B1 true FR2796193B1 (fr) 2001-10-05

Family

ID=9547706

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9908637A Expired - Fee Related FR2796193B1 (fr) 1999-07-05 1999-07-05 Procede et dispositif de codage audio

Country Status (6)

Country Link
EP (1) EP1192618B1 (fr)
AT (1) ATE277402T1 (fr)
AU (1) AU6291900A (fr)
DE (1) DE60014084D1 (fr)
FR (1) FR2796193B1 (fr)
WO (1) WO2001003117A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03136100A (ja) * 1989-10-20 1991-06-10 Canon Inc 音声処理方法及び装置

Also Published As

Publication number Publication date
AU6291900A (en) 2001-01-22
EP1192618A1 (fr) 2002-04-03
EP1192618B1 (fr) 2004-09-22
DE60014084D1 (de) 2004-10-28
FR2796193A1 (fr) 2001-01-12
ATE277402T1 (de) 2004-10-15
WO2001003117A1 (fr) 2001-01-11

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Legal Events

Date Code Title Description
CA Change of address
CD Change of name or company name
ST Notification of lapse

Effective date: 20060331