CN1172293C - 有效频谱包络编码方法及其编解码设备 - Google Patents
有效频谱包络编码方法及其编解码设备 Download PDFInfo
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- CN1172293C CN1172293C CNB008136025A CN00813602A CN1172293C CN 1172293 C CN1172293 C CN 1172293C CN B008136025 A CNB008136025 A CN B008136025A CN 00813602 A CN00813602 A CN 00813602A CN 1172293 C CN1172293 C CN 1172293C
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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
Claims (15)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE99035529 | 1999-10-01 | ||
SE9903552A SE9903552D0 (sv) | 1999-01-27 | 1999-10-01 | Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching |
PCT/SE2000/000158 WO2000045378A2 (en) | 1999-01-27 | 2000-01-26 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
WOPCT/SE00/00158 | 2000-01-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1377499A CN1377499A (zh) | 2002-10-30 |
CN1172293C true CN1172293C (zh) | 2004-10-20 |
Family
ID=20417226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB008136025A Expired - Lifetime CN1172293C (zh) | 1999-10-01 | 2000-09-29 | 有效频谱包络编码方法及其编解码设备 |
Country Status (14)
Country | Link |
---|---|
US (3) | US6978236B1 (zh) |
EP (1) | EP1216474B1 (zh) |
JP (3) | JP4035631B2 (zh) |
CN (1) | CN1172293C (zh) |
AT (1) | ATE271250T1 (zh) |
AU (1) | AU7821200A (zh) |
BR (1) | BRPI0014642B1 (zh) |
DE (1) | DE60012198T2 (zh) |
DK (1) | DK1216474T3 (zh) |
ES (1) | ES2223591T3 (zh) |
HK (1) | HK1049401B (zh) |
PT (1) | PT1216474E (zh) |
RU (1) | RU2236046C2 (zh) |
WO (1) | WO2001026095A1 (zh) |
Families Citing this family (124)
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JP4628921B2 (ja) | 2011-02-09 |
DE60012198T2 (de) | 2005-08-18 |
CN1377499A (zh) | 2002-10-30 |
BR0014642A (pt) | 2002-06-18 |
JP4035631B2 (ja) | 2008-01-23 |
EP1216474B1 (en) | 2004-07-14 |
US7191121B2 (en) | 2007-03-13 |
JP4334526B2 (ja) | 2009-09-30 |
ES2223591T3 (es) | 2005-03-01 |
JP2003529787A (ja) | 2003-10-07 |
ATE271250T1 (de) | 2004-07-15 |
RU2236046C2 (ru) | 2004-09-10 |
BRPI0014642B1 (pt) | 2016-04-26 |
US6978236B1 (en) | 2005-12-20 |
US7181389B2 (en) | 2007-02-20 |
US20060031065A1 (en) | 2006-02-09 |
PT1216474E (pt) | 2004-11-30 |
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