DE60225130D1 - Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches - Google Patents

Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches

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Publication number
DE60225130D1
DE60225130D1 DE60225130T DE60225130T DE60225130D1 DE 60225130 D1 DE60225130 D1 DE 60225130D1 DE 60225130 T DE60225130 T DE 60225130T DE 60225130 T DE60225130 T DE 60225130T DE 60225130 D1 DE60225130 D1 DE 60225130D1
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Prior art keywords
transient
audio signal
audio
transform
bit
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Expired - Lifetime
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DE60225130T
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English (en)
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DE60225130T2 (de
Inventor
Brett G Crockett
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Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing Corp
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Publication of DE60225130D1 publication Critical patent/DE60225130D1/de
Publication of DE60225130T2 publication Critical patent/DE60225130T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L21/04—Time compression or expansion
    • 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
    • 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
    • G10L19/0212—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 orthogonal transformation
    • 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
    • G10L19/022—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
DE60225130T 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches Expired - Lifetime DE60225130T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29028601P 2001-05-10 2001-05-10
US290286P 2001-05-10
PCT/US2002/012957 WO2002093560A1 (en) 2001-05-10 2002-04-25 Improving transient performance of low bit rate audio coding systems by reducing pre-noise

Publications (2)

Publication Number Publication Date
DE60225130D1 true DE60225130D1 (de) 2008-04-03
DE60225130T2 DE60225130T2 (de) 2009-02-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE60225130T Expired - Lifetime DE60225130T2 (de) 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches

Country Status (14)

Country Link
US (1) US7313519B2 (de)
EP (1) EP1386312B1 (de)
JP (1) JP4290997B2 (de)
KR (1) KR100945673B1 (de)
CN (1) CN1312662C (de)
AT (1) ATE387000T1 (de)
AU (1) AU2002307533B2 (de)
CA (1) CA2445480C (de)
DE (1) DE60225130T2 (de)
DK (1) DK1386312T3 (de)
ES (1) ES2298394T3 (de)
HK (1) HK1070457A1 (de)
MX (1) MXPA03010237A (de)
WO (1) WO2002093560A1 (de)

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Publication number Publication date
EP1386312A1 (de) 2004-02-04
JP2004528597A (ja) 2004-09-16
ES2298394T3 (es) 2008-05-16
US7313519B2 (en) 2007-12-25
EP1386312B1 (de) 2008-02-20
CN1312662C (zh) 2007-04-25
CA2445480C (en) 2011-04-12
KR100945673B1 (ko) 2010-03-05
WO2002093560A1 (en) 2002-11-21
CA2445480A1 (en) 2002-11-21
DK1386312T3 (da) 2008-06-09
CN1552060A (zh) 2004-12-01
AU2002307533B2 (en) 2008-01-31
DE60225130T2 (de) 2009-02-26
MXPA03010237A (es) 2004-03-16
JP4290997B2 (ja) 2009-07-08
HK1070457A1 (en) 2005-06-17
KR20040034604A (ko) 2004-04-28
US20040133423A1 (en) 2004-07-08
ATE387000T1 (de) 2008-03-15

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