BRPI0414757A - equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada - Google Patents

equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada

Info

Publication number
BRPI0414757A
BRPI0414757A BRPI0414757-0A BRPI0414757A BRPI0414757A BR PI0414757 A BRPI0414757 A BR PI0414757A BR PI0414757 A BRPI0414757 A BR PI0414757A BR PI0414757 A BRPI0414757 A BR PI0414757A
Authority
BR
Brazil
Prior art keywords
channel
channels
processing
downmix
equipment
Prior art date
Application number
BRPI0414757-0A
Other languages
English (en)
Inventor
Juergen Herre
Johannes Hilpert
Stefan Geyersberger
Andreas Hoelzer
Claus Spenger
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34394093&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0414757(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Priority to BR122018069728-8A priority Critical patent/BR122018069728B1/pt
Priority to BR122018069726-1A priority patent/BR122018069726B1/pt
Priority to BR122018069730-0A priority patent/BR122018069730B1/pt
Priority to BR122018069731-8A priority patent/BR122018069731B1/pt
Publication of BRPI0414757A publication Critical patent/BRPI0414757A/pt
Publication of BRPI0414757B1 publication Critical patent/BRPI0414757B1/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
    • 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
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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 
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • 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)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Executing Machine-Instructions (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"EQUIPAMENTO E MéTODO PARA O PROCESSAMENTO DE UM SINAL DE áUDIO MULTICANAIS, EQUIPAMENTO PARA O PROCESSAMENTO INVERSO DOS DADOS DE ENTRADA E MéTODO DE PROCESSAMENTO INVERSO DOS DADOS DE ENTRADA". No processamento de um sinal de áudio multicanais tendo pelo menos três canais originais, são providos um primeiro canal downmix e um segundo canal downmix (12), que se derivam dos canais originais. Para um canal original selecionado dos canais originais, são calculadas as informações colaterais de canal (14) de maneira que um canal downmix ou um canal downmix combinado incluindo o primeiro e o segundo canais downmix, quando pesados usando as informações colaterais de canal, resulta em uma aproximação do canal original selecionado. As informações colaterais de canal e o primeiro e o segundo canais downmíx formam os dados de saída (20) a ser transmitidos a um decodificador que, no caso de um decodificador de baixo nível somente decodifica o primeiro e o segundo canais downmix ou, no caso de um decodificador de alto nível, provê total sinal de áudio multicanais baseado nos canais downmix e nas informações colaterais de canal. Como as informações colaterais de canal somente ocupam um pequeno número de bits, e como o decodificador não usa dematrixing, é obtida uma extensão eficiente e de alta qualidade multicanais para os stereo players e os players ampliados multicanais.
BRPI0414757A 2003-10-02 2004-09-30 equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada BRPI0414757B1 (pt)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR122018069728-8A BR122018069728B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BR122018069726-1A BR122018069726B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BR122018069730-0A BR122018069730B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.
BR122018069731-8A BR122018069731B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/679,085 US7447317B2 (en) 2003-10-02 2003-10-02 Compatible multi-channel coding/decoding by weighting the downmix channel
PCT/EP2004/010948 WO2005036925A2 (en) 2003-10-02 2004-09-30 Compatible multi-channel coding/decoding

Publications (2)

Publication Number Publication Date
BRPI0414757A true BRPI0414757A (pt) 2006-11-28
BRPI0414757B1 BRPI0414757B1 (pt) 2018-12-26

Family

ID=34394093

Family Applications (5)

Application Number Title Priority Date Filing Date
BR122018069728-8A BR122018069728B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BRPI0414757A BRPI0414757B1 (pt) 2003-10-02 2004-09-30 equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BR122018069726-1A BR122018069726B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BR122018069730-0A BR122018069730B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.
BR122018069731-8A BR122018069731B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BR122018069728-8A BR122018069728B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada

Family Applications After (3)

Application Number Title Priority Date Filing Date
BR122018069726-1A BR122018069726B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada
BR122018069730-0A BR122018069730B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.
BR122018069731-8A BR122018069731B1 (pt) 2003-10-02 2004-09-30 Equipamento e método para o processamento de um sinal de áudio multicanais, equipamento para o processamento inverso dos dados de entrada e método de processamento inverso dos dados de entrada.

Country Status (17)

Country Link
US (11) US7447317B2 (pt)
EP (1) EP1668959B1 (pt)
JP (1) JP4547380B2 (pt)
KR (1) KR100737302B1 (pt)
CN (1) CN1864436B (pt)
AT (1) ATE350879T1 (pt)
BR (5) BR122018069728B1 (pt)
CA (1) CA2540851C (pt)
DE (1) DE602004004168T2 (pt)
DK (1) DK1668959T3 (pt)
ES (1) ES2278348T3 (pt)
IL (1) IL174286A (pt)
MX (1) MXPA06003627A (pt)
NO (8) NO347074B1 (pt)
PT (1) PT1668959E (pt)
RU (1) RU2327304C2 (pt)
WO (1) WO2005036925A2 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN111615044A (zh) * 2019-02-25 2020-09-01 宏碁股份有限公司 声音信号的能量分布修正方法及其系统

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