WO2001026095A1 - Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching - Google Patents
Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching Download PDFInfo
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- WO2001026095A1 WO2001026095A1 PCT/SE2000/001887 SE0001887W WO0126095A1 WO 2001026095 A1 WO2001026095 A1 WO 2001026095A1 SE 0001887 W SE0001887 W SE 0001887W WO 0126095 A1 WO0126095 A1 WO 0126095A1
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- time
- frequency
- signal
- resolution
- spectral envelope
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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
- G10L19/02—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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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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
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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
- G10L19/02—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
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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
- G10L19/02—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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
-
- 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
- G10L19/032—Quantisation or dequantisation of spectral components
- G10L19/035—Scalar quantisation
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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
- 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
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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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
Abstract
Description
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00968271A EP1216474B1 (en) | 1999-10-01 | 2000-09-29 | Efficient spectral envelope coding using variable time/frequency resolution |
AU78212/00A AU7821200A (en) | 1999-10-01 | 2000-09-29 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
BRPI0014642A BRPI0014642B1 (en) | 1999-10-01 | 2000-09-29 | spectral envelope coding using variable time-frequency resolution and time-frequency shifting |
JP2001528974A JP4035631B2 (en) | 1999-10-01 | 2000-09-29 | Efficient spectral envelope coding using variable time / frequency resolution and time / frequency switching |
PT00968271T PT1216474E (en) | 1999-10-01 | 2000-09-29 | EFFICIENT CODE OF SPECIAL ENVELOPE USING RESOLUTION TIME / VARIABLE FREQUENCY |
DE60012198T DE60012198T2 (en) | 1999-10-01 | 2000-09-29 | ENCODING THE CORD OF THE SPECTRUM BY VARIABLE TIME / FREQUENCY RESOLUTION |
AT00968271T ATE271250T1 (en) | 1999-10-01 | 2000-09-29 | CODING THE ENVELOPE OF THE SPECTRUM USING VARIABLE TIME/FREQUENCY RESOLUTION |
HK03101398.3A HK1049401B (en) | 1999-10-01 | 2003-02-24 | Effective spectral envelope coding method and coding/encoding apparatus thereof |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9903552A SE9903552D0 (en) | 1999-01-27 | 1999-10-01 | Efficient spectral envelope coding using dynamic scalefactor grouping and time / frequency switching |
SE9903552-9 | 1999-10-01 | ||
SEPCT/SE00/00158 | 2000-01-26 | ||
PCT/SE2000/000158 WO2000045378A2 (en) | 1999-01-27 | 2000-01-26 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001026095A1 true WO2001026095A1 (en) | 2001-04-12 |
Family
ID=20417226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2000/001887 WO2001026095A1 (en) | 1999-10-01 | 2000-09-29 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
Country Status (14)
Country | Link |
---|---|
US (3) | US6978236B1 (en) |
EP (1) | EP1216474B1 (en) |
JP (3) | JP4035631B2 (en) |
CN (1) | CN1172293C (en) |
AT (1) | ATE271250T1 (en) |
AU (1) | AU7821200A (en) |
BR (1) | BRPI0014642B1 (en) |
DE (1) | DE60012198T2 (en) |
DK (1) | DK1216474T3 (en) |
ES (1) | ES2223591T3 (en) |
HK (1) | HK1049401B (en) |
PT (1) | PT1216474E (en) |
RU (1) | RU2236046C2 (en) |
WO (1) | WO2001026095A1 (en) |
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BR0014642A (en) | 2002-06-18 |
ES2223591T3 (en) | 2005-03-01 |
BRPI0014642B1 (en) | 2016-04-26 |
PT1216474E (en) | 2004-11-30 |
JP4628921B2 (en) | 2011-02-09 |
JP2006065342A (en) | 2006-03-09 |
US6978236B1 (en) | 2005-12-20 |
DE60012198D1 (en) | 2004-08-19 |
US7181389B2 (en) | 2007-02-20 |
EP1216474B1 (en) | 2004-07-14 |
EP1216474A1 (en) | 2002-06-26 |
US20060031065A1 (en) | 2006-02-09 |
RU2236046C2 (en) | 2004-09-10 |
ATE271250T1 (en) | 2004-07-15 |
CN1172293C (en) | 2004-10-20 |
DE60012198T2 (en) | 2005-08-18 |
JP4334526B2 (en) | 2009-09-30 |
US7191121B2 (en) | 2007-03-13 |
DK1216474T3 (en) | 2004-10-04 |
CN1377499A (en) | 2002-10-30 |
JP2006031053A (en) | 2006-02-02 |
HK1049401B (en) | 2005-11-18 |
AU7821200A (en) | 2001-05-10 |
HK1049401A1 (en) | 2003-05-09 |
US20060031064A1 (en) | 2006-02-09 |
JP2003529787A (en) | 2003-10-07 |
JP4035631B2 (en) | 2008-01-23 |
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