AU6292200A - Audio encoding with harmonic components - Google Patents
Audio encoding with harmonic componentsInfo
- Publication number
- AU6292200A AU6292200A AU62922/00A AU6292200A AU6292200A AU 6292200 A AU6292200 A AU 6292200A AU 62922/00 A AU62922/00 A AU 62922/00A AU 6292200 A AU6292200 A AU 6292200A AU 6292200 A AU6292200 A AU 6292200A
- Authority
- AU
- Australia
- Prior art keywords
- audio signal
- fundamental frequency
- frequency
- harmonic components
- audio encoding
- 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.)
- Abandoned
Links
- 230000005236 sound signal Effects 0.000 abstract 3
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000001228 spectrum Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 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
-
- 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)
- Stereophonic System (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Cereal-Derived Products (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.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9908634 | 1999-07-05 | ||
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 |
---|---|
AU6292200A true AU6292200A (en) | 2001-01-22 |
Family
ID=9547703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU62922/00A Abandoned AU6292200A (en) | 1999-07-05 | 2000-07-04 | Audio encoding 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)
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 WO PCT/FR2000/001908 patent/WO2001003120A1/en active IP Right Grant
- 2000-07-04 AT AT00949623T patent/ATE277404T1/en not_active IP Right Cessation
- 2000-07-04 DE DE60014086T patent/DE60014086D1/en not_active Expired - Lifetime
- 2000-07-04 EP EP00949623A patent/EP1192621B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2001003120A1 (en) | 2001-01-11 |
FR2796190A1 (en) | 2001-01-12 |
ATE277404T1 (en) | 2004-10-15 |
DE60014086D1 (en) | 2004-10-28 |
FR2796190B1 (en) | 2002-05-03 |
EP1192621A1 (en) | 2002-04-03 |
EP1192621B1 (en) | 2004-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |