BRPI0507207A8 - Equipamento e método para o processamento de um sinal multicanais - Google Patents

Equipamento e método para o processamento de um sinal multicanais

Info

Publication number
BRPI0507207A8
BRPI0507207A8 BRPI0507207A BRPI0507207A BRPI0507207A8 BR PI0507207 A8 BRPI0507207 A8 BR PI0507207A8 BR PI0507207 A BRPI0507207 A BR PI0507207A BR PI0507207 A BRPI0507207 A BR PI0507207A BR PI0507207 A8 BRPI0507207 A8 BR PI0507207A8
Authority
BR
Brazil
Prior art keywords
channels
processing
prediction
equipment
channel
Prior art date
Application number
BRPI0507207A
Other languages
English (en)
Inventor
Herre Jürgen
Schug Michael
Gröschel Alexandre
Original Assignee
Fraunhofer Ges Suz Foerderung Der Angewandten Forschung E V
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 Suz Foerderung Der Angewandten Forschung E V filed Critical Fraunhofer Ges Suz Foerderung Der Angewandten Forschung E V
Publication of BRPI0507207A publication Critical patent/BRPI0507207A/pt
Publication of BRPI0507207A8 publication Critical patent/BRPI0507207A8/pt
Publication of BRPI0507207B1 publication Critical patent/BRPI0507207B1/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
    • G10L19/02—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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
  • Color Image Communication Systems (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Detergent Compositions (AREA)
  • Radio Relay Systems (AREA)

Abstract

EQUIPAMENTO E MÉTODO PARA O PROCESSAMENTO DE UM SINAL MULTICANAIS. O equipamento para o processamento de um sinal multicanais inclui um meio (12) para a determinação de uma similaridade entre um primeiro de dois canais e um segundo dos dois canais. Além disso, é provido o meio (16) para uma realização de uma filtração de predição dos coeficientes espectrais, que é formado para realizar uma filtração de predição com somente um único filtro de predição (16a) para ambos canais no caso de alta similaridade entre o primeiro e o segundo canais, e para realizar uma filtração de predição com dois filtros de predição em separado (16b) no caso de uma dissimilaridade entre o primeiro e o segundo canais. Com isso, são evitadas uma introdução de problemas estéreo e uma deterioração do ganho de codificação nas técnicas de codificação estéreo.
BRPI0507207A 2004-03-01 2005-02-28 equipamento e método para o processamento de um sinal multicanais BRPI0507207B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004009954A DE102004009954B4 (de) 2004-03-01 2004-03-01 Vorrichtung und Verfahren zum Verarbeiten eines Multikanalsignals
PCT/EP2005/002110 WO2005083678A1 (de) 2004-03-01 2005-02-28 Vorrichtung und verfahren zum verarbeiten eines multikanalsignals

Publications (3)

Publication Number Publication Date
BRPI0507207A BRPI0507207A (pt) 2007-06-12
BRPI0507207A8 true BRPI0507207A8 (pt) 2018-06-12
BRPI0507207B1 BRPI0507207B1 (pt) 2018-12-26

Family

ID=34894904

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0507207A BRPI0507207B1 (pt) 2004-03-01 2005-02-28 equipamento e método para o processamento de um sinal multicanais

Country Status (18)

Country Link
US (1) US7340391B2 (pt)
EP (1) EP1697930B1 (pt)
JP (1) JP4413257B2 (pt)
KR (1) KR100823097B1 (pt)
CN (1) CN1926608B (pt)
AT (1) ATE364882T1 (pt)
AU (1) AU2005217517B2 (pt)
BR (1) BRPI0507207B1 (pt)
CA (1) CA2558161C (pt)
DE (2) DE102004009954B4 (pt)
DK (1) DK1697930T3 (pt)
ES (1) ES2286798T3 (pt)
HK (1) HK1095194A1 (pt)
IL (1) IL177213A (pt)
NO (1) NO339114B1 (pt)
PT (1) PT1697930E (pt)
RU (1) RU2332727C2 (pt)
WO (1) WO2005083678A1 (pt)

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EP3483883A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding and decoding with selective postfiltering
WO2019091576A1 (en) 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoders, audio decoders, methods and computer programs adapting an encoding and decoding of least significant bits
EP3483886A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Selecting pitch lag
EP3483882A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlling bandwidth in encoders and/or decoders
EP3483884A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Signal filtering
EP3483878A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder supporting a set of different loss concealment tools
EP3483880A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Temporal noise shaping
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Also Published As

Publication number Publication date
KR20060121982A (ko) 2006-11-29
AU2005217517B2 (en) 2008-06-26
BRPI0507207B1 (pt) 2018-12-26
CA2558161A1 (en) 2005-09-09
RU2332727C2 (ru) 2008-08-27
KR100823097B1 (ko) 2008-04-18
WO2005083678A1 (de) 2005-09-09
BRPI0507207A (pt) 2007-06-12
IL177213A (en) 2011-10-31
EP1697930B1 (de) 2007-06-13
HK1095194A1 (en) 2007-04-27
CN1926608A (zh) 2007-03-07
JP4413257B2 (ja) 2010-02-10
DE102004009954A1 (de) 2005-09-29
NO20064431L (no) 2006-09-29
DK1697930T3 (da) 2007-10-08
JP2007525718A (ja) 2007-09-06
ES2286798T3 (es) 2007-12-01
RU2006134641A (ru) 2008-04-10
DE102004009954B4 (de) 2005-12-15
IL177213A0 (en) 2006-12-10
NO339114B1 (no) 2016-11-14
US7340391B2 (en) 2008-03-04
ATE364882T1 (de) 2007-07-15
EP1697930A1 (de) 2006-09-06
US20070033056A1 (en) 2007-02-08
CA2558161C (en) 2010-05-11
AU2005217517A1 (en) 2005-09-09
CN1926608B (zh) 2010-05-05
DE502005000864D1 (de) 2007-07-26
PT1697930E (pt) 2007-09-25

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Legal Events

Date Code Title Description
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: G10L 19/008 (2013.01), G10L 19/03 (2013.01)

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 26/12/2018, OBSERVADAS AS CONDICOES LEGAIS.