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NO20063722L - Oppbygging av multikanal-utgangssignal og generering av nedblandingssignal - Google Patents

Oppbygging av multikanal-utgangssignal og generering av nedblandingssignal

Info

Publication number
NO20063722L
NO20063722L NO20063722A NO20063722A NO20063722L NO 20063722 L NO20063722 L NO 20063722L NO 20063722 A NO20063722 A NO 20063722A NO 20063722 A NO20063722 A NO 20063722A NO 20063722 L NO20063722 L NO 20063722L
Authority
NO
Norway
Prior art keywords
channel
channels
input
coherence
signal
Prior art date
Application number
NO20063722A
Other languages
English (en)
Other versions
NO337395B1 (no
Inventor
Juergen Herre
Christof Faller
Original Assignee
Agere 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34750329&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20063722(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Agere Systems Inc filed Critical Agere Systems Inc
Publication of NO20063722L publication Critical patent/NO20063722L/no
Publication of NO337395B1 publication Critical patent/NO337395B1/no

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • 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)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Optimization (AREA)
  • Health & Medical Sciences (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Analysis (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Radio Relay Systems (AREA)
  • Logic Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

Anordning for konstruksjon av et multi-kanals utgangssignal ved å benytte et inngangssignal og parametrisk sideinformasjon, der inngangssignalet omfatter den første inngangskanal og den andre inngangskanal fremskaffet fra et opprinnelig multikanalssignal, og der den parametriske sideinformasjon som beskriver interrelasjoner mellom kanaler i det multi-kanals opprinnelige signal benytter basiskanaler for syntetisering (324) av de første og andre utgangskanaler på en side av en antatt lytteposisjon, som er forskjellig fra hverandre. Basiskanalene er forskjellige fra hverandre på grunn av et koherens-mål. Koherensen mellom basiskanalene (f.eks. den venstre og den venstre surround, rekonstruerte kanal) reduseres ved å beregne (322) en basiskanal for en av disse kanalene ved en kombinasjon av inngangskanalene, der denne kombinasjonen bestemmes av koherens-målet. Således kan en høy subjektiv kvalitet for rekonstruksjonen tilveiebringes på grunn av en tilnærming av en opprinnelig fremre/bakre koherens.
NO20063722A 2004-01-20 2006-08-18 Oppbygging av multikanal-utgangssignal og generering av nedblandingssignal NO337395B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/762,100 US7394903B2 (en) 2004-01-20 2004-01-20 Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
PCT/EP2005/000408 WO2005069274A1 (en) 2004-01-20 2005-01-17 Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal

Publications (2)

Publication Number Publication Date
NO20063722L true NO20063722L (no) 2006-10-19
NO337395B1 NO337395B1 (no) 2016-04-04

Family

ID=34750329

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20063722A NO337395B1 (no) 2004-01-20 2006-08-18 Oppbygging av multikanal-utgangssignal og generering av nedblandingssignal

Country Status (17)

Country Link
US (1) US7394903B2 (no)
EP (1) EP1706865B1 (no)
JP (1) JP4574626B2 (no)
KR (1) KR100803344B1 (no)
CN (1) CN1910655B (no)
AT (1) ATE393950T1 (no)
AU (1) AU2005204715B2 (no)
BR (1) BRPI0506533B1 (no)
CA (1) CA2554002C (no)
DE (1) DE602005006385T2 (no)
ES (1) ES2306076T3 (no)
IL (1) IL176776A (no)
MX (1) MXPA06008030A (no)
NO (1) NO337395B1 (no)
PT (1) PT1706865E (no)
RU (1) RU2329548C2 (no)
WO (1) WO2005069274A1 (no)

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