BRPI0513255A - dispositivo para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saìda, sistema de áudio, método para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saìda, e, produto de programa de computação - Google Patents

dispositivo para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saìda, sistema de áudio, método para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saìda, e, produto de programa de computação

Info

Publication number
BRPI0513255A
BRPI0513255A BRPI0513255-0A BRPI0513255A BRPI0513255A BR PI0513255 A BRPI0513255 A BR PI0513255A BR PI0513255 A BRPI0513255 A BR PI0513255A BR PI0513255 A BRPI0513255 A BR PI0513255A
Authority
BR
Brazil
Prior art keywords
channels
audio
converting
input
audio channels
Prior art date
Application number
BRPI0513255-0A
Other languages
English (en)
Inventor
Dirk J Breebaart
Erik G P Schuijers
Heiko Purnhagen
Karl J Roeden
Original Assignee
Koninkl Philips Electronics Nv
Coding Tech Ab
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 Koninkl Philips Electronics Nv, Coding Tech Ab filed Critical Koninkl Philips Electronics Nv
Publication of BRPI0513255A publication Critical patent/BRPI0513255A/pt
Publication of BRPI0513255B1 publication Critical patent/BRPI0513255B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo five- or more-channel type, e.g. virtual surround
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

DISPOSITIVO PARA CONVERTER UM PRIMEIRO NúMERO DE CANAIS DE áUDIO DE ENTRADA EM UM SEGUNDO NúMERO DE CANAIS DE áUDIO DE SAìDA, SISTEMA DE áUDIO, MéTODO PARA CONVERTER UM PRIMEIRO NúMERO DE CANAIS DE áUDIO DE ENTRADA EM UM SEGUNDO NúMERO DE CANAIS DE áUDIO DE SAìDA, E, PRODUTO DE PROGRAMA DE COMPUTAçãO. Um dispositivo (1) para converter um primeiro número (M) de canais de áudio de entrada em um segundo número maior (N) de canais de áudio de saída inclui: unidades de descorrelação (3) para decompor os canais de áudio de entrada em um conjunto de canais auxiliares descorrelacionados, pelo menos uma unidade de mistura elevadora (4) para combinar os canais auxiliares descorrelacionados nos canais de áudio de saída, e pelo menos uma unidade de pré-processamento (2) para pré-processar os canais de áudio de entrada e alimentar os canais de áudio de entrada pré-processados às unidades de descorrelação (3). A unidade de pré-processamento (2) e a unidade de mistura elevadora (4) são preferivelmente controladas por parâmetros de áudio.
BRPI0513255-0A 2004-07-14 2005-07-11 Dispositivo e método para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saída, sistema de áudio, e, meio de armazenamento legível por computador BRPI0513255B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP04103370 2004-07-14
EP04103370.5 2004-07-14
EP05103072 2005-04-18
EP05103072.4 2005-04-18
PCT/IB2005/052293 WO2006008697A1 (en) 2004-07-14 2005-07-11 Audio channel conversion

Publications (2)

Publication Number Publication Date
BRPI0513255A true BRPI0513255A (pt) 2008-04-29
BRPI0513255B1 BRPI0513255B1 (pt) 2019-06-25

Family

ID=34980157

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0513255-0A BRPI0513255B1 (pt) 2004-07-14 2005-07-11 Dispositivo e método para converter um primeiro número de canais de áudio de entrada em um segundo número de canais de áudio de saída, sistema de áudio, e, meio de armazenamento legível por computador

Country Status (13)

Country Link
US (1) US8793125B2 (pt)
EP (1) EP1769491B1 (pt)
JP (1) JP4989468B2 (pt)
KR (2) KR101283525B1 (pt)
CN (1) CN101014998B (pt)
AT (1) ATE444549T1 (pt)
BR (1) BRPI0513255B1 (pt)
DE (1) DE602005016931D1 (pt)
ES (1) ES2333137T3 (pt)
MX (1) MX2007000391A (pt)
PL (1) PL1769491T3 (pt)
RU (1) RU2391714C2 (pt)
WO (1) WO2006008697A1 (pt)

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Also Published As

Publication number Publication date
DE602005016931D1 (de) 2009-11-12
PL1769491T3 (pl) 2010-03-31
KR20120099287A (ko) 2012-09-07
CN101014998A (zh) 2007-08-08
WO2006008697A8 (en) 2007-03-15
KR101283525B1 (ko) 2013-07-15
EP1769491A1 (en) 2007-04-04
RU2007105501A (ru) 2008-08-20
JP4989468B2 (ja) 2012-08-01
JP2008507184A (ja) 2008-03-06
WO2006008697A1 (en) 2006-01-26
US20080091436A1 (en) 2008-04-17
US8793125B2 (en) 2014-07-29
RU2391714C2 (ru) 2010-06-10
EP1769491B1 (en) 2009-09-30
ATE444549T1 (de) 2009-10-15
BRPI0513255B1 (pt) 2019-06-25
MX2007000391A (es) 2007-06-25
CN101014998B (zh) 2011-02-23
KR101205480B1 (ko) 2012-11-28
KR20070042145A (ko) 2007-04-20
ES2333137T3 (es) 2010-02-17

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