FR2796190B1 - AUDIO CODING METHOD AND DEVICE - Google Patents

AUDIO CODING METHOD AND DEVICE

Info

Publication number
FR2796190B1
FR2796190B1 FR9908634A FR9908634A FR2796190B1 FR 2796190 B1 FR2796190 B1 FR 2796190B1 FR 9908634 A FR9908634 A FR 9908634A FR 9908634 A FR9908634 A FR 9908634A FR 2796190 B1 FR2796190 B1 FR 2796190B1
Authority
FR
France
Prior art keywords
audio signal
fundamental frequency
frequency
coding method
audio 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.)
Expired - Fee Related
Application number
FR9908634A
Other languages
French (fr)
Other versions
FR2796190A1 (en
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 FR9908634A priority Critical patent/FR2796190B1/en
Priority to AT00949623T priority patent/ATE277404T1/en
Priority to AU62922/00A priority patent/AU6292200A/en
Priority to DE60014086T priority patent/DE60014086D1/en
Priority to EP00949623A priority patent/EP1192621B1/en
Priority to PCT/FR2000/001908 priority patent/WO2001003120A1/en
Publication of FR2796190A1 publication Critical patent/FR2796190A1/en
Application granted granted Critical
Publication of FR2796190B1 publication Critical patent/FR2796190B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10L19/02—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

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)
  • Cereal-Derived Products (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (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.
FR9908634A 1999-07-05 1999-07-05 AUDIO CODING METHOD AND DEVICE Expired - Fee Related FR2796190B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9908634A FR2796190B1 (en) 1999-07-05 1999-07-05 AUDIO CODING METHOD AND DEVICE
AT00949623T ATE277404T1 (en) 1999-07-05 2000-07-04 AUDIO CODING WITH HARMONIC COMPONENTS
AU62922/00A AU6292200A (en) 1999-07-05 2000-07-04 Audio encoding with harmonic components
DE60014086T DE60014086D1 (en) 1999-07-05 2000-07-04 AUDIO CODING WITH HARMONIOUS COMPONENTS
EP00949623A EP1192621B1 (en) 1999-07-05 2000-07-04 Audio encoding with harmonic components
PCT/FR2000/001908 WO2001003120A1 (en) 1999-07-05 2000-07-04 Audio encoding with harmonic components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9908634A FR2796190B1 (en) 1999-07-05 1999-07-05 AUDIO CODING METHOD AND DEVICE

Publications (2)

Publication Number Publication Date
FR2796190A1 FR2796190A1 (en) 2001-01-12
FR2796190B1 true FR2796190B1 (en) 2002-05-03

Family

ID=9547703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9908634A Expired - Fee Related FR2796190B1 (en) 1999-07-05 1999-07-05 AUDIO CODING METHOD AND DEVICE

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
AU6292200A (en) 2001-01-22
EP1192621B1 (en) 2004-09-22
FR2796190A1 (en) 2001-01-12
DE60014086D1 (en) 2004-10-28
EP1192621A1 (en) 2002-04-03
WO2001003120A1 (en) 2001-01-11
ATE277404T1 (en) 2004-10-15

Similar Documents

Publication Publication Date Title
WO1996002990A3 (en) Method and device for synchronization of transmitter and receiver in a digital system
MX2008008881A (en) Modem for communicating data over a voice channel of a communications system.
DE60214903D1 (en) DATA TRANSMISSION SYSTEM AND PROCESS WITH SOUND WAVES
SE9800776L (en) Methods and apparatus for audio coding
MY136521A (en) Audio coding system using characteristics of a decoded signal to adapt synthesized spectral components
DE60103424D1 (en) IMPROVE THE PERFORMANCE OF ENCODING SYSTEMS USING HIGH FREQUENCY RECONSTRUCTION METHODS
DE50005897D1 (en) DEVICE FOR SOUND INSULATION ON HUMAN EARS
WO2004053838A3 (en) Method and apparatus for noise reduction
FR2814302B1 (en) MULTI-PORTABLE SIGNAL WITH DISTRIBUTED PILOTS DESIGNED TO LIMIT INTERFERENCE, METHOD OF CONSTRUCTING A SIGNAL, METHOD OF RECEPTION, RECEIVER AND RELATED TRANSMISSION DEVICE
DE69938016D1 (en) Method and device for masking the quantisation noise of audio signals
BR0001078A (en) Method and apparatus for positive mental stimulation
TW353840B (en) Frequency-domain carrierless AM-PM demodulator
ATE309589T1 (en) GREAT NOISE SIGNAL REDUCTION WITH ELECTRONIC ITEM MONITORING
AU3066300A (en) Ofdm receiver with adaptive equaliser
DE69733085D1 (en) TONE SIGNAL IDENTIFICATION BY MARKING SIGNALS IN TONE SIGNAL
EP1589679A4 (en) Optical transmission method and optical transmission device
IL111157A (en) Method for encoding and decoding data transmitted over the phone
FR2796190B1 (en) AUDIO CODING METHOD AND DEVICE
AU2003291862A1 (en) A highly optimized method for modelling a windowed signal
WO2002039683A3 (en) Apparatus and method for sending and receiving data signals over a clock signal line by pulse with modulation
ATE360922T1 (en) INTERFERENCE LEVEL ESTIMATION IN A COMMUNICATIONS SYSTEM
WO2002023746A3 (en) Method for system-independent digital evaluation of mobile communication reception signals of various mobile radio standards
WO2000051014A3 (en) Modulated complex lapped transform for integrated signal enhancement and coding
FR2796193B1 (en) AUDIO CODING METHOD AND DEVICE
FR2911031B1 (en) AUDIO CODING METHOD AND DEVICE

Legal Events

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

Effective date: 20060331