FR2796190B1 - AUDIO CODING METHOD AND DEVICE - Google Patents
AUDIO CODING METHOD AND DEVICEInfo
- 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
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 abstract 3
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000001228 spectrum Methods 0.000 abstract 2
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)
- 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.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9908634A FR2796190B1 (en) | 1999-07-05 | 1999-07-05 | AUDIO CODING METHOD AND DEVICE |
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 |
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 |
AT00949623T ATE277404T1 (en) | 1999-07-05 | 2000-07-04 | AUDIO CODING 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)
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 |
-
1999
- 1999-07-05 FR FR9908634A patent/FR2796190B1/en not_active Expired - Fee Related
-
2000
- 2000-07-04 AU AU62922/00A patent/AU6292200A/en not_active Abandoned
- 2000-07-04 DE DE60014086T patent/DE60014086D1/en not_active Expired - Lifetime
- 2000-07-04 AT AT00949623T patent/ATE277404T1/en not_active IP Right Cessation
- 2000-07-04 WO PCT/FR2000/001908 patent/WO2001003120A1/en active IP Right Grant
- 2000-07-04 EP EP00949623A patent/EP1192621B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1192621A1 (en) | 2002-04-03 |
ATE277404T1 (en) | 2004-10-15 |
WO2001003120A1 (en) | 2001-01-11 |
FR2796190A1 (en) | 2001-01-12 |
AU6292200A (en) | 2001-01-22 |
DE60014086D1 (en) | 2004-10-28 |
EP1192621B1 (en) | 2004-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CA | Change of address | ||
CD | Change of name or company name | ||
ST | Notification of lapse |
Effective date: 20060331 |