BRPI0511362A - sintetizador multicanais e método para a geração de um sinal de saìda multicanais - Google Patents

sintetizador multicanais e método para a geração de um sinal de saìda multicanais

Info

Publication number
BRPI0511362A
BRPI0511362A BRPI0511362-8A BRPI0511362A BRPI0511362A BR PI0511362 A BRPI0511362 A BR PI0511362A BR PI0511362 A BRPI0511362 A BR PI0511362A BR PI0511362 A BRPI0511362 A BR PI0511362A
Authority
BR
Brazil
Prior art keywords
post
reconstruction parameter
channel
output signal
reconstruction
Prior art date
Application number
BRPI0511362-8A
Other languages
English (en)
Inventor
Juergen Herre
Sasha Disch
Johannes Hilpert
Christian Ertel
Andreas Hoelzer
Claus-Christian Spencer
Original Assignee
Fraunhofer Ges Forschung
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 filed Critical Fraunhofer Ges Forschung
Publication of BRPI0511362A publication Critical patent/BRPI0511362A/pt
Publication of BRPI0511362B1 publication Critical patent/BRPI0511362B1/pt

Links

Classifications

    • 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
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • 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)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Radio Relay Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stereophonic System (AREA)

Abstract

SINTETIZADOR MULTICANAIS E MéTODO PARA A GERAçãO DE UM SINAL DE SAìDA MULTICANAIS. Sintetizador multicanais que inclui um pós-processador (10) para a determinação de parâmetros de reconstrução pós-processados ou quantidades derivadas do parâmetro de reconstrução da porção de tempo real do sinal de entrada, de maneira que o parâmetro de reconstrução pós-processado ou a quantidade pós-processada seja diferente do correspondente parâmetro de reconstrução quantizado e inversamente quantizado quando o volume do parâmetro de reconstrução pós-processado ou da quantidade derivada não está ligado por uma dimensão de etapa de quantização. Um reconstrutor multicanais (12) usa o parâmetro de reconstrução pós-processado para reconstruir o sinal de saída multicanais. O pós-processamento dos parâmetros de reconstrução em conexão com a codificação/decodificação multicanais permite uma baixa taxa de dados, por um lado, e uma alta qualidade pelo outro lado, já que são reduzidas grandes mudanças no sinal de saída multicanais reconstruído devido a uma grande dimensão de etapa de quantização do parâmetro de reconstrução, que é preferível devido aos baixos requisitos de taxa de bits.
BRPI0511362A 2004-06-30 2005-06-13 sintetizador multicanais e método para a geração de um sinal de saída multicanais BRPI0511362B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/883,538 US8843378B2 (en) 2004-06-30 2004-06-30 Multi-channel synthesizer and method for generating a multi-channel output signal
PCT/EP2005/006315 WO2006002748A1 (en) 2004-06-30 2005-06-13 Multi-channel synthesizer and method for generating a multi-channel output signal

Publications (2)

Publication Number Publication Date
BRPI0511362A true BRPI0511362A (pt) 2007-12-04
BRPI0511362B1 BRPI0511362B1 (pt) 2018-12-26

Family

ID=34971777

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0511362A BRPI0511362B1 (pt) 2004-06-30 2005-06-13 sintetizador multicanais e método para a geração de um sinal de saída multicanais

Country Status (17)

Country Link
US (1) US8843378B2 (pt)
EP (1) EP1649723B1 (pt)
JP (1) JP4712799B2 (pt)
KR (1) KR100913987B1 (pt)
CN (1) CN1954642B (pt)
AT (1) ATE394901T1 (pt)
AU (1) AU2005259618B2 (pt)
BR (1) BRPI0511362B1 (pt)
CA (1) CA2569666C (pt)
DE (1) DE602005006495D1 (pt)
ES (1) ES2307188T3 (pt)
IL (1) IL178670A (pt)
MX (1) MXPA06014968A (pt)
NO (1) NO338980B1 (pt)
PT (1) PT1649723E (pt)
RU (1) RU2345506C2 (pt)
WO (1) WO2006002748A1 (pt)

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Also Published As

Publication number Publication date
CN1954642B (zh) 2010-05-12
BRPI0511362B1 (pt) 2018-12-26
IL178670A (en) 2011-10-31
AU2005259618A1 (en) 2006-01-12
KR100913987B1 (ko) 2009-08-25
ATE394901T1 (de) 2008-05-15
PT1649723E (pt) 2008-07-28
CN1954642A (zh) 2007-04-25
HK1090504A1 (en) 2006-12-22
CA2569666A1 (en) 2006-01-12
IL178670A0 (en) 2007-02-11
US8843378B2 (en) 2014-09-23
NO20070560L (no) 2007-03-30
WO2006002748A1 (en) 2006-01-12
DE602005006495D1 (de) 2008-06-19
RU2007103341A (ru) 2008-08-10
AU2005259618B2 (en) 2008-05-22
MXPA06014968A (es) 2007-02-08
NO338980B1 (no) 2016-11-07
ES2307188T3 (es) 2008-11-16
JP2008504578A (ja) 2008-02-14
EP1649723B1 (en) 2008-05-07
JP4712799B2 (ja) 2011-06-29
US20060004583A1 (en) 2006-01-05
RU2345506C2 (ru) 2009-01-27
KR20070028481A (ko) 2007-03-12
EP1649723A1 (en) 2006-04-26
CA2569666C (en) 2013-07-16

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