WO2006116024A3 - Systems, methods, and apparatus for gain factor attenuation - Google Patents
Systems, methods, and apparatus for gain factor attenuation Download PDFInfo
- Publication number
- WO2006116024A3 WO2006116024A3 PCT/US2006/014992 US2006014992W WO2006116024A3 WO 2006116024 A3 WO2006116024 A3 WO 2006116024A3 US 2006014992 W US2006014992 W US 2006014992W WO 2006116024 A3 WO2006116024 A3 WO 2006116024A3
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- WO
- WIPO (PCT)
- Prior art keywords
- gain factor
- signal
- systems
- methods
- envelopes
- Prior art date
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Classifications
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- 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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- 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
-
- 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
- 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
-
- 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
-
- 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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
- G10L19/16—Vocoder architecture
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
Abstract
A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800215134A CN101199003B (en) | 2005-04-22 | 2006-04-21 | Systems, methods, and apparatus for gain factor attenuation |
EP06758453.2A EP1875464B9 (en) | 2005-04-22 | 2006-04-21 | Method, storage medium and apparatus for gain factor attenuation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US67396505P | 2005-04-22 | 2005-04-22 | |
US60/673,965 | 2005-04-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006116024A2 WO2006116024A2 (en) | 2006-11-02 |
WO2006116024A3 true WO2006116024A3 (en) | 2007-03-22 |
Family
ID=36741298
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/014993 WO2006116025A1 (en) | 2005-04-22 | 2006-04-21 | Systems, methods, and apparatus for gain factor smoothing |
PCT/US2006/014992 WO2006116024A2 (en) | 2005-04-22 | 2006-04-21 | Systems, methods, and apparatus for gain factor attenuation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/014993 WO2006116025A1 (en) | 2005-04-22 | 2006-04-21 | Systems, methods, and apparatus for gain factor smoothing |
Country Status (14)
Country | Link |
---|---|
US (2) | US9043214B2 (en) |
EP (2) | EP1875464B9 (en) |
KR (2) | KR100947421B1 (en) |
CN (3) | CN101199004B (en) |
DK (1) | DK1875463T3 (en) |
ES (1) | ES2705589T3 (en) |
HU (1) | HUE040628T2 (en) |
NO (1) | NO20075509L (en) |
PL (1) | PL1875463T3 (en) |
PT (1) | PT1875463T (en) |
SI (1) | SI1875463T1 (en) |
TR (1) | TR201821299T4 (en) |
TW (2) | TWI317933B (en) |
WO (2) | WO2006116025A1 (en) |
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TR201821299T4 (en) | 2019-01-21 |
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CN101199003A (en) | 2008-06-11 |
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CN101199003B (en) | 2012-01-11 |
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CN102110440A (en) | 2011-06-29 |
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CN101199004B (en) | 2011-11-09 |
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KR20080003912A (en) | 2008-01-08 |
EP1875464A2 (en) | 2008-01-09 |
ES2705589T3 (en) | 2019-03-26 |
CN101199004A (en) | 2008-06-11 |
KR100947421B1 (en) | 2010-03-12 |
US20060282262A1 (en) | 2006-12-14 |
DK1875463T3 (en) | 2019-01-28 |
KR20080002996A (en) | 2008-01-04 |
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TWI324336B (en) | 2010-05-01 |
TWI317933B (en) | 2009-12-01 |
PT1875463T (en) | 2019-01-24 |
SI1875463T1 (en) | 2019-02-28 |
EP1875464B9 (en) | 2020-10-28 |
EP1875463B1 (en) | 2018-10-17 |
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