DE69107841T2 - Transformationskodierer und -dekodierer mit adaptiver blocklänge, adaptiver transformation und adaptivem fenster für hochwertige tonsignale. - Google Patents

Transformationskodierer und -dekodierer mit adaptiver blocklänge, adaptiver transformation und adaptivem fenster für hochwertige tonsignale.

Info

Publication number
DE69107841T2
DE69107841T2 DE69107841T DE69107841T DE69107841T2 DE 69107841 T2 DE69107841 T2 DE 69107841T2 DE 69107841 T DE69107841 T DE 69107841T DE 69107841 T DE69107841 T DE 69107841T DE 69107841 T2 DE69107841 T2 DE 69107841T2
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DE
Germany
Prior art keywords
adaptive
transformation
pct
window
block length
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
DE69107841T
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English (en)
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DE69107841D1 (de
Inventor
Grant Davidson
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Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing Corp
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24024165&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69107841(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of DE69107841D1 publication Critical patent/DE69107841D1/de
Application granted granted Critical
Publication of DE69107841T2 publication Critical patent/DE69107841T2/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
    • G10L19/02—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69107841T 1990-04-12 1991-04-12 Transformationskodierer und -dekodierer mit adaptiver blocklänge, adaptiver transformation und adaptivem fenster für hochwertige tonsignale. Expired - Lifetime DE69107841T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50880990A 1990-04-12 1990-04-12
PCT/US1991/002512 WO1991016769A1 (en) 1990-04-12 1991-04-12 Adaptive-block-length, adaptive-transform, and adaptive-window transform coder, decoder, and encoder/decoder for high-quality audio

Publications (2)

Publication Number Publication Date
DE69107841D1 DE69107841D1 (de) 1995-04-06
DE69107841T2 true DE69107841T2 (de) 1995-08-17

Family

ID=24024165

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69107841T Expired - Lifetime DE69107841T2 (de) 1990-04-12 1991-04-12 Transformationskodierer und -dekodierer mit adaptiver blocklänge, adaptiver transformation und adaptivem fenster für hochwertige tonsignale.

Country Status (13)

Country Link
US (1) US5394473A (de)
EP (1) EP0524264B1 (de)
JP (1) JP3224130B2 (de)
KR (1) KR100193353B1 (de)
CN (1) CN1062963C (de)
AT (1) ATE119336T1 (de)
AU (1) AU644170B2 (de)
BR (1) BR9106332A (de)
CA (1) CA2059141C (de)
DE (1) DE69107841T2 (de)
DK (1) DK0524264T3 (de)
ES (1) ES2068580T3 (de)
WO (1) WO1991016769A1 (de)

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CA2059141C (en) 2002-01-01
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US5394473A (en) 1995-02-28
WO1991016769A1 (en) 1991-10-31
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EP0524264A1 (de) 1993-01-27
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