ATE250272T1 - Verbesserte spektrale übersetzung/faltung im subband-bereich - Google Patents
Verbesserte spektrale übersetzung/faltung im subband-bereichInfo
- Publication number
- ATE250272T1 ATE250272T1 AT01937069T AT01937069T ATE250272T1 AT E250272 T1 ATE250272 T1 AT E250272T1 AT 01937069 T AT01937069 T AT 01937069T AT 01937069 T AT01937069 T AT 01937069T AT E250272 T1 ATE250272 T1 AT E250272T1
- Authority
- AT
- Austria
- Prior art keywords
- subband signals
- filter bank
- patched
- adjusted
- digital filter
- Prior art date
Links
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
- G10L19/02—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
- 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
-
- 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
- G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
-
- 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
- G10L19/26—Pre-filtering or post-filtering
-
- 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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0001926A SE0001926D0 (sv) | 2000-05-23 | 2000-05-23 | Improved spectral translation/folding in the subband domain |
PCT/SE2001/001171 WO2001091111A1 (en) | 2000-05-23 | 2001-05-23 | Improved spectral translation/folding in the subband domain |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE250272T1 true ATE250272T1 (de) | 2003-10-15 |
Family
ID=20279807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT01937069T ATE250272T1 (de) | 2000-05-23 | 2001-05-23 | Verbesserte spektrale übersetzung/faltung im subband-bereich |
Country Status (12)
Country | Link |
---|---|
US (17) | US7483758B2 (de) |
EP (1) | EP1285436B1 (de) |
JP (2) | JP4289815B2 (de) |
CN (1) | CN1210689C (de) |
AT (1) | ATE250272T1 (de) |
AU (1) | AU2001262836A1 (de) |
BR (1) | BRPI0111362B1 (de) |
DE (1) | DE60100813T2 (de) |
HK (1) | HK1067954A1 (de) |
RU (1) | RU2251795C2 (de) |
SE (2) | SE0001926D0 (de) |
WO (1) | WO2001091111A1 (de) |
Families Citing this family (90)
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SE0001926D0 (sv) | 2000-05-23 | 2000-05-23 | Lars Liljeryd | Improved spectral translation/folding in the subband domain |
AUPR433901A0 (en) | 2001-04-10 | 2001-05-17 | Lake Technology Limited | High frequency signal construction method |
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US20030187663A1 (en) | 2002-03-28 | 2003-10-02 | Truman Michael Mead | Broadband frequency translation for high frequency regeneration |
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US7318027B2 (en) | 2003-02-06 | 2008-01-08 | Dolby Laboratories Licensing Corporation | Conversion of synthesized spectral components for encoding and low-complexity transcoding |
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US7318035B2 (en) | 2003-05-08 | 2008-01-08 | Dolby Laboratories Licensing Corporation | Audio coding systems and methods using spectral component coupling and spectral component regeneration |
WO2005043511A1 (en) * | 2003-10-30 | 2005-05-12 | Koninklijke Philips Electronics N.V. | Audio signal encoding or decoding |
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JP4701392B2 (ja) * | 2005-07-20 | 2011-06-15 | 国立大学法人九州工業大学 | 高域信号補間方法及び高域信号補間装置 |
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