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DK1016320T3 - Fremgangsmåde og apparat til indkodning og dekodning af multiple audiokanaler ved lave bithastigheder - Google Patents

Fremgangsmåde og apparat til indkodning og dekodning af multiple audiokanaler ved lave bithastigheder

Info

Publication number
DK1016320T3
DK1016320T3 DK98931197T DK98931197T DK1016320T3 DK 1016320 T3 DK1016320 T3 DK 1016320T3 DK 98931197 T DK98931197 T DK 98931197T DK 98931197 T DK98931197 T DK 98931197T DK 1016320 T3 DK1016320 T3 DK 1016320T3
Authority
DK
Denmark
Prior art keywords
signals
spatial
signal
smoothing
encoding
Prior art date
Application number
DK98931197T
Other languages
English (en)
Inventor
Mark F Davis
Matthew C Fellers
Original Assignee
Dolby Lab Licensing Corp
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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Application granted granted Critical
Publication of DK1016320T3 publication Critical patent/DK1016320T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • 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
    • H04B1/665—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 using psychoacoustic properties of the ear, e.g. masking effect
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DK98931197T 1997-07-16 1998-06-19 Fremgangsmåde og apparat til indkodning og dekodning af multiple audiokanaler ved lave bithastigheder DK1016320T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/895,496 US5890125A (en) 1997-07-16 1997-07-16 Method and apparatus for encoding and decoding multiple audio channels at low bit rates using adaptive selection of encoding method
PCT/US1998/008647 WO1999004498A2 (en) 1997-07-16 1998-06-19 Method and apparatus for encoding and decoding multiple audio channels at low bit rates

Publications (1)

Publication Number Publication Date
DK1016320T3 true DK1016320T3 (da) 2002-07-08

Family

ID=25404588

Family Applications (1)

Application Number Title Priority Date Filing Date
DK98931197T DK1016320T3 (da) 1997-07-16 1998-06-19 Fremgangsmåde og apparat til indkodning og dekodning af multiple audiokanaler ved lave bithastigheder

Country Status (12)

Country Link
US (1) US5890125A (da)
EP (1) EP1016320B1 (da)
JP (1) JP4223679B2 (da)
KR (1) KR100550399B1 (da)
CN (1) CN1151705C (da)
AT (1) ATE215295T1 (da)
AU (1) AU746416B2 (da)
CA (1) CA2295505C (da)
DE (1) DE69804478T2 (da)
DK (1) DK1016320T3 (da)
ES (1) ES2171031T3 (da)
WO (1) WO1999004498A2 (da)

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ATE215295T1 (de) 2002-04-15
US5890125A (en) 1999-03-30
CA2295505A1 (en) 1999-01-28
EP1016320A2 (en) 2000-07-05
WO1999004498A2 (en) 1999-01-28
DE69804478T2 (de) 2002-10-02
AU8138098A (en) 1999-02-10
ES2171031T3 (es) 2002-08-16
CN1151705C (zh) 2004-05-26
AU746416B2 (en) 2002-05-02
JP2001510953A (ja) 2001-08-07
WO1999004498A3 (en) 1999-09-16
DE69804478D1 (de) 2002-05-02
JP4223679B2 (ja) 2009-02-12
CA2295505C (en) 2008-09-02
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