DE60014363D1 - Verringerung der von der quantisierung verursachten datenblock-diskontinuitäten in einem audio-kodierer - Google Patents

Verringerung der von der quantisierung verursachten datenblock-diskontinuitäten in einem audio-kodierer

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Publication number
DE60014363D1
DE60014363D1 DE60014363T DE60014363T DE60014363D1 DE 60014363 D1 DE60014363 D1 DE 60014363D1 DE 60014363 T DE60014363 T DE 60014363T DE 60014363 T DE60014363 T DE 60014363T DE 60014363 D1 DE60014363 D1 DE 60014363D1
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Germany
Prior art keywords
quantization
residue
algorithm
block
decompression
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Expired - Lifetime
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DE60014363T
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English (en)
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DE60014363T2 (de
Inventor
Shuwu Wu
John Mantegna
Keren Perlmutter
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Historic AOL LLC
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America Online Inc
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Publication of DE60014363D1 publication Critical patent/DE60014363D1/de
Publication of DE60014363T2 publication Critical patent/DE60014363T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/0212Speech 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
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/028Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/032Quantisation or dequantisation of spectral components
    • G10L19/038Vector quantisation, e.g. TwinVQ audio
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/022Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L2019/0001Codebooks
    • G10L2019/0012Smoothing of parameters of the decoder interpolation
DE60014363T 1999-05-27 2000-05-25 Verringerung der von der quantisierung verursachten datenblock-diskontinuitäten in einem audio-kodierer Expired - Lifetime DE60014363T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US321488 1994-10-12
US09/321,488 US6370502B1 (en) 1999-05-27 1999-05-27 Method and system for reduction of quantization-induced block-discontinuities and general purpose audio codec
PCT/US2000/014463 WO2000074038A1 (en) 1999-05-27 2000-05-25 Reduction of quantization-induced block-discontinuities in an audio coder

Publications (2)

Publication Number Publication Date
DE60014363D1 true DE60014363D1 (de) 2004-11-04
DE60014363T2 DE60014363T2 (de) 2005-10-13

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Application Number Title Priority Date Filing Date
DE60014363T Expired - Lifetime DE60014363T2 (de) 1999-05-27 2000-05-25 Verringerung der von der quantisierung verursachten datenblock-diskontinuitäten in einem audio-kodierer
DE60041790T Expired - Lifetime DE60041790D1 (de) 1999-05-27 2000-05-25 Verringerung der datenblock-unterbrechungen von quantisierung in einem audio-kodierer

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE60041790T Expired - Lifetime DE60041790D1 (de) 1999-05-27 2000-05-25 Verringerung der datenblock-unterbrechungen von quantisierung in einem audio-kodierer

Country Status (6)

Country Link
US (9) US6370502B1 (de)
EP (2) EP1480201B1 (de)
AT (2) ATE278236T1 (de)
CA (1) CA2373520C (de)
DE (2) DE60014363T2 (de)
WO (1) WO2000074038A1 (de)

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US20050159940A1 (en) 2005-07-21
US20090063164A1 (en) 2009-03-05
US7181403B2 (en) 2007-02-20
US20020116199A1 (en) 2002-08-22
CA2373520A1 (en) 2000-12-07
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EP1480201B1 (de) 2009-03-11
US6370502B1 (en) 2002-04-09
US8285558B2 (en) 2012-10-09
US20020111801A1 (en) 2002-08-15
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US8010371B2 (en) 2011-08-30
US7418395B2 (en) 2008-08-26
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US20110282677A1 (en) 2011-11-17
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