HK1149979A1 - Multi-channel audio encoder - Google Patents

Multi-channel audio encoder

Info

Publication number
HK1149979A1
HK1149979A1 HK11104134.6A HK11104134A HK1149979A1 HK 1149979 A1 HK1149979 A1 HK 1149979A1 HK 11104134 A HK11104134 A HK 11104134A HK 1149979 A1 HK1149979 A1 HK 1149979A1
Authority
HK
Hong Kong
Prior art keywords
audio
audio coder
khz
predictive
subband
Prior art date
Application number
HK11104134.6A
Other languages
English (en)
Inventor
Stephen M Smyth
Michael H Smyth
William Paul Smith
Original Assignee
Dts Bvi Ltd
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 Dts Bvi Ltd filed Critical Dts Bvi Ltd
Publication of HK1149979A1 publication Critical patent/HK1149979A1/xx

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Color Television Systems (AREA)
HK11104134.6A 1995-12-01 2011-04-26 Multi-channel audio encoder HK1149979A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US789695P 1995-12-01 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

Publications (1)

Publication Number Publication Date
HK1149979A1 true HK1149979A1 (en) 2011-10-21

Family

ID=26677495

Family Applications (4)

Application Number Title Priority Date Filing Date
HK99100515A HK1015510A1 (en) 1995-12-01 1999-02-05 Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation.
HK06112652.8A HK1092270A1 (en) 1995-12-01 2006-11-17 Multi-channel audio encoder
HK06112653.7A HK1092271A1 (en) 1995-12-01 2006-11-17 Multi-channel audio encoder
HK11104134.6A HK1149979A1 (en) 1995-12-01 2011-04-26 Multi-channel audio encoder

Family Applications Before (3)

Application Number Title Priority Date Filing Date
HK99100515A HK1015510A1 (en) 1995-12-01 1999-02-05 Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation.
HK06112652.8A HK1092270A1 (en) 1995-12-01 2006-11-17 Multi-channel audio encoder
HK06112653.7A HK1092271A1 (en) 1995-12-01 2006-11-17 Multi-channel audio encoder

Country Status (18)

Country Link
US (4) US5956674A (xx)
EP (1) EP0864146B1 (xx)
JP (1) JP4174072B2 (xx)
KR (1) KR100277819B1 (xx)
CN (5) CN101872618B (xx)
AT (1) ATE279770T1 (xx)
AU (1) AU705194B2 (xx)
BR (1) BR9611852A (xx)
CA (2) CA2238026C (xx)
DE (1) DE69633633T2 (xx)
DK (1) DK0864146T3 (xx)
EA (1) EA001087B1 (xx)
ES (1) ES2232842T3 (xx)
HK (4) HK1015510A1 (xx)
MX (1) MX9804320A (xx)
PL (3) PL182240B1 (xx)
PT (1) PT864146E (xx)
WO (1) WO1997021211A1 (xx)

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