DE69633633D1 - Mehrkanaliger prädiktiver subband-kodierer mit adaptiver, psychoakustischer bitzuweisung - Google Patents

Mehrkanaliger prädiktiver subband-kodierer mit adaptiver, psychoakustischer bitzuweisung

Info

Publication number
DE69633633D1
DE69633633D1 DE1996633633 DE69633633T DE69633633D1 DE 69633633 D1 DE69633633 D1 DE 69633633D1 DE 1996633633 DE1996633633 DE 1996633633 DE 69633633 T DE69633633 T DE 69633633T DE 69633633 D1 DE69633633 D1 DE 69633633D1
Authority
DE
Germany
Prior art keywords
audio
audio coder
khz
predictive
psychoacoustic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE1996633633
Other languages
English (en)
Other versions
DE69633633T2 (de
Inventor
Stephen M Smyth
Michael H Smyth
William Paul Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DTS Inc
Original Assignee
Digital Theater Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Theater Systems Inc filed Critical Digital Theater Systems Inc
Application granted granted Critical
Publication of DE69633633D1 publication Critical patent/DE69633633D1/de
Publication of DE69633633T2 publication Critical patent/DE69633633T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
DE69633633T 1995-12-01 1996-11-21 Mehrkanaliger prädiktiver subband-kodierer mit adaptiver, psychoakustischer bitzuweisung Expired - Lifetime DE69633633T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US789695P 1995-12-01 1995-12-01
US7896P 1995-12-01
US08/642,254 US5956674A (en) 1995-12-01 1996-05-02 Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US642254 1996-05-02
PCT/US1996/018764 WO1997021211A1 (en) 1995-12-01 1996-11-21 Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation

Publications (2)

Publication Number Publication Date
DE69633633D1 true DE69633633D1 (de) 2004-11-18
DE69633633T2 DE69633633T2 (de) 2005-10-27

Family

ID=26677495

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69633633T Expired - Lifetime DE69633633T2 (de) 1995-12-01 1996-11-21 Mehrkanaliger prädiktiver subband-kodierer mit adaptiver, psychoakustischer bitzuweisung

Country Status (18)

Country Link
US (4) US5956674A (de)
EP (1) EP0864146B1 (de)
JP (1) JP4174072B2 (de)
KR (1) KR100277819B1 (de)
CN (5) CN1132151C (de)
AT (1) ATE279770T1 (de)
AU (1) AU705194B2 (de)
BR (1) BR9611852A (de)
CA (2) CA2331611C (de)
DE (1) DE69633633T2 (de)
DK (1) DK0864146T3 (de)
EA (1) EA001087B1 (de)
ES (1) ES2232842T3 (de)
HK (4) HK1015510A1 (de)
MX (1) MX9804320A (de)
PL (3) PL183092B1 (de)
PT (1) PT864146E (de)
WO (1) WO1997021211A1 (de)

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