ATE277404T1 - AUDIO CODING WITH HARMONIC COMPONENTS - Google Patents

AUDIO CODING WITH HARMONIC COMPONENTS

Info

Publication number
ATE277404T1
ATE277404T1 AT00949623T AT00949623T ATE277404T1 AT E277404 T1 ATE277404 T1 AT E277404T1 AT 00949623 T AT00949623 T AT 00949623T AT 00949623 T AT00949623 T AT 00949623T AT E277404 T1 ATE277404 T1 AT E277404T1
Authority
AT
Austria
Prior art keywords
audio signal
fundamental frequency
frequency
audio coding
harmonic components
Prior art date
Application number
AT00949623T
Other languages
German (de)
Inventor
Francois Capman
Carlo Murgia
Original Assignee
Nortel Networks France
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 Nortel Networks France filed Critical Nortel Networks France
Application granted granted Critical
Publication of ATE277404T1 publication Critical patent/ATE277404T1/en

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
    • G10L19/02—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 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
    • G10L19/08—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

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.
AT00949623T 1999-07-05 2000-07-04 AUDIO CODING WITH HARMONIC COMPONENTS ATE277404T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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
ATE277404T1 true ATE277404T1 (en) 2004-10-15

Family

ID=9547703

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00949623T ATE277404T1 (en) 1999-07-05 2000-07-04 AUDIO CODING 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
AU6292200A (en) 2001-01-22
DE60014086D1 (en) 2004-10-28
EP1192621A1 (en) 2002-04-03
EP1192621B1 (en) 2004-09-22
FR2796190B1 (en) 2002-05-03

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