FR2891099B3 - Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie. - Google Patents

Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie.

Info

Publication number
FR2891099B3
FR2891099B3 FR0509677A FR0509677A FR2891099B3 FR 2891099 B3 FR2891099 B3 FR 2891099B3 FR 0509677 A FR0509677 A FR 0509677A FR 0509677 A FR0509677 A FR 0509677A FR 2891099 B3 FR2891099 B3 FR 2891099B3
Authority
FR
France
Prior art keywords
plot
decomposition
fourier transformation
audio codec
energy based
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 - Lifetime
Application number
FR0509677A
Other languages
English (en)
Other versions
FR2891099A1 (fr
Inventor
Georges Samake
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0509677A priority Critical patent/FR2891099B3/fr
Priority to FR0607091A priority patent/FR2891100B1/fr
Priority to US11/532,563 priority patent/US20070094015A1/en
Publication of FR2891099A1 publication Critical patent/FR2891099A1/fr
Application granted granted Critical
Publication of FR2891099B3 publication Critical patent/FR2891099B3/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/0212—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 using orthogonal transformation
    • 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
    • G10L19/0204—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 using subband decomposition
    • G10L19/0208—Subband 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)
FR0509677A 2005-09-22 2005-09-22 Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie. Expired - Lifetime FR2891099B3 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0509677A FR2891099B3 (fr) 2005-09-22 2005-09-22 Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie.
FR0607091A FR2891100B1 (fr) 2005-09-22 2006-08-03 Codec audio utilisant la transformation de fourier rapide, le recouvrement partiel et une decomposition en deux plans basee sur l'energie.
US11/532,563 US20070094015A1 (en) 2005-09-22 2006-09-18 Audio codec using the Fast Fourier Transform, the partial overlap and a decomposition in two plans based on the energy.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509677A FR2891099B3 (fr) 2005-09-22 2005-09-22 Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie.

Publications (2)

Publication Number Publication Date
FR2891099A1 FR2891099A1 (fr) 2007-03-23
FR2891099B3 true FR2891099B3 (fr) 2007-12-21

Family

ID=37831793

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0509677A Expired - Lifetime FR2891099B3 (fr) 2005-09-22 2005-09-22 Codec audio utilisant la transformation de fourier rapide et une decomposition en deux plans basee sur l'energie.

Country Status (1)

Country Link
FR (1) FR2891099B3 (fr)

Also Published As

Publication number Publication date
FR2891099A1 (fr) 2007-03-23

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