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
Links
- 238000000354 decomposition reaction Methods 0.000 title 1
- 230000009466 transformation Effects 0.000 title 1
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)
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) |
-
2005
- 2005-09-22 FR FR0509677A patent/FR2891099B3/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2891099A1 (fr) | 2007-03-23 |
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