AU6292200A - Audio encoding with harmonic components - Google Patents

Audio encoding with harmonic components

Info

Publication number
AU6292200A
AU6292200A AU62922/00A AU6292200A AU6292200A AU 6292200 A AU6292200 A AU 6292200A AU 62922/00 A AU62922/00 A AU 62922/00A AU 6292200 A AU6292200 A AU 6292200A AU 6292200 A AU6292200 A AU 6292200A
Authority
AU
Australia
Prior art keywords
audio signal
fundamental frequency
frequency
harmonic components
audio encoding
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.)
Abandoned
Application number
AU62922/00A
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
Publication of AU6292200A publication Critical patent/AU6292200A/en
Abandoned 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
    • 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)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Cereal-Derived Products (AREA)

Abstract

The invention concerns a method wherein the encoder estimates a fundamental frequency (F0) of an audio signal, determines a spectrum of the audio signal by a transform in the frequency domain of a frame of the audio signal, and includes in the digital flow transmitted to the decoder data representing spectral amplitudes associated with multiple frequencies of the fundamental frequency. The spectral amplitude associated with one of the multiple frequencies of the fundamental frequency is a local maximum of the spectrum module in the neighbourhood of said multiple frequency.
AU62922/00A 1999-07-05 2000-07-04 Audio encoding with harmonic components Abandoned AU6292200A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9908634 1999-07-05
FR9908634A FR2796190B1 (en) 1999-07-05 1999-07-05 AUDIO CODING METHOD AND DEVICE
PCT/FR2000/001908 WO2001003120A1 (en) 1999-07-05 2000-07-04 Audio encoding with harmonic components

Publications (1)

Publication Number Publication Date
AU6292200A true AU6292200A (en) 2001-01-22

Family

ID=9547703

Family Applications (1)

Application Number Title Priority Date Filing Date
AU62922/00A Abandoned AU6292200A (en) 1999-07-05 2000-07-04 Audio encoding with harmonic components

Country Status (6)

Country Link
EP (1) EP1192621B1 (en)
AT (1) ATE277404T1 (en)
AU (1) AU6292200A (en)
DE (1) DE60014086D1 (en)
FR (1) FR2796190B1 (en)
WO (1) WO2001003120A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054072A (en) * 1987-04-02 1991-10-01 Massachusetts Institute Of Technology Coding of acoustic waveforms
US5630011A (en) * 1990-12-05 1997-05-13 Digital Voice Systems, Inc. Quantization of harmonic amplitudes representing speech
US5369724A (en) * 1992-01-17 1994-11-29 Massachusetts Institute Of Technology Method and apparatus for encoding, decoding and compression of audio-type data using reference coefficients located within a band of coefficients
US5787387A (en) * 1994-07-11 1998-07-28 Voxware, Inc. Harmonic adaptive speech coding method and system
JP3653826B2 (en) * 1995-10-26 2005-06-02 ソニー株式会社 Speech decoding method and apparatus

Also Published As

Publication number Publication date
WO2001003120A1 (en) 2001-01-11
FR2796190A1 (en) 2001-01-12
ATE277404T1 (en) 2004-10-15
DE60014086D1 (en) 2004-10-28
FR2796190B1 (en) 2002-05-03
EP1192621A1 (en) 2002-04-03
EP1192621B1 (en) 2004-09-22

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase