BRPI0605865A - codificação hierárquica de áudio multicanais com informações colaterais compactas - Google Patents

codificação hierárquica de áudio multicanais com informações colaterais compactas

Info

Publication number
BRPI0605865A
BRPI0605865A BRPI0605865-5A BRPI0605865A BRPI0605865A BR PI0605865 A BRPI0605865 A BR PI0605865A BR PI0605865 A BRPI0605865 A BR PI0605865A BR PI0605865 A BRPI0605865 A BR PI0605865A
Authority
BR
Brazil
Prior art keywords
channel
audio signal
hierarchical
information
compact
Prior art date
Application number
BRPI0605865-5A
Other languages
English (en)
Inventor
Andreas Hoelzer
Juergen Herre
Jonas Roeden
Heiko Purnhagen
Kristofer Kjoerling
Jonas Engdegard
Jeroen Breebaart
Erik Schuijers
Werner Oomen
Lars Villemoes
Original Assignee
Fraunhofer Ges Forschung
Coding Tech Ab
Koninkl Philips Electronics Nv
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 Fraunhofer Ges Forschung, Coding Tech Ab, Koninkl Philips Electronics Nv filed Critical Fraunhofer Ges Forschung
Publication of BRPI0605865A publication Critical patent/BRPI0605865A/pt
Publication of BRPI0605865B1 publication Critical patent/BRPI0605865B1/pt

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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • 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)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)

Abstract

CODIFICAçãO HIERáRQUICA DE àUDIO MULTICANAIS COM INFORMAçõES COLATERAIS COMPACTAS. Uma representação paramétrica de um sinal de áudio multicanais descreve bem as propriedades espaciais do sinal de áudio com informações colaterais compactas quando as informações de coerência, que descrevem a coerência entre um primeiro e um segundo canais, são obtidas dentro de um processo de codificação hierárquica somente para pares de canais que incluem um primeiro canal tendo somente informações de um lado esquerdo em relação à uma posição de audição e incluindo um segundo canal tendo somente informações de um lado direito em relação à uma posição de audição. Como dentro do processo hierárquico os canais de áudio múltiplo do sinal de áudio passam por downmix iterativamente para canais monofónicos, é possível escolher os parâmetros relevantes de uma etapa de codificação envolvendo somente os pares de canais que transportam as informações necessárias para descrever as propriedades espaciais do sinal de áudio multicanais.
BRPI0605865A 2005-04-15 2006-02-01 codificação hierárquica de áudio multicanais com informações colaterais compactas BRPI0605865B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67154405P 2005-04-15 2005-04-15
US11/314,711 US7961890B2 (en) 2005-04-15 2005-12-21 Multi-channel hierarchical audio coding with compact side information
PCT/EP2006/000875 WO2006108462A1 (en) 2005-04-15 2006-02-01 Multi-channel hierarchical audio coding with compact side-information

Publications (2)

Publication Number Publication Date
BRPI0605865A true BRPI0605865A (pt) 2007-12-18
BRPI0605865B1 BRPI0605865B1 (pt) 2019-09-03

Family

ID=36190759

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0605865A BRPI0605865B1 (pt) 2005-04-15 2006-02-01 codificação hierárquica de áudio multicanais com informações colaterais compactas

Country Status (12)

Country Link
US (1) US7961890B2 (pt)
EP (1) EP1869667B1 (pt)
JP (1) JP4519919B2 (pt)
KR (1) KR100878367B1 (pt)
CN (1) CN101031959B (pt)
BR (1) BRPI0605865B1 (pt)
ES (1) ES2740104T3 (pt)
MY (1) MY147652A (pt)
PL (1) PL1869667T3 (pt)
RU (1) RU2367033C2 (pt)
TW (1) TWI314840B (pt)
WO (1) WO2006108462A1 (pt)

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Also Published As

Publication number Publication date
CN101031959A (zh) 2007-09-05
WO2006108462A1 (en) 2006-10-19
US20060233380A1 (en) 2006-10-19
RU2007104337A (ru) 2008-08-10
MY147652A (en) 2012-12-31
KR100878367B1 (ko) 2009-01-15
JP4519919B2 (ja) 2010-08-04
JP2008516275A (ja) 2008-05-15
BRPI0605865B1 (pt) 2019-09-03
PL1869667T3 (pl) 2019-11-29
TWI314840B (en) 2009-09-11
TW200701822A (en) 2007-01-01
CN101031959B (zh) 2011-06-22
EP1869667A1 (en) 2007-12-26
ES2740104T3 (es) 2020-02-05
US7961890B2 (en) 2011-06-14
KR20070088461A (ko) 2007-08-29
EP1869667B1 (en) 2019-05-08
RU2367033C2 (ru) 2009-09-10

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