BRPI0507207A - 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
BRPI0507207A
BRPI0507207A BRPI0507207-7A BRPI0507207A BRPI0507207A BR PI0507207 A BRPI0507207 A BR PI0507207A BR PI0507207 A BRPI0507207 A BR PI0507207A BR PI0507207 A BRPI0507207 A BR PI0507207A
Authority
BR
Brazil
Prior art keywords
channel signal
channels
prediction
equipment
signal processing
Prior art date
Application number
BRPI0507207-7A
Other languages
English (en)
Inventor
Juergen Herre
Michael Schug
Alexandre Gr Schel
Original Assignee
Fraunhofer Ges Suz F Rderung D
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 F Rderung D filed Critical Fraunhofer Ges Suz F Rderung D
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)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Detergent Compositions (AREA)
  • Color Image Communication Systems (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 true BRPI0507207A (pt) 2007-06-12
BRPI0507207A8 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 (17)

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)
IL (1) IL177213A (pt)
NO (1) NO339114B1 (pt)
PT (1) PT1697930E (pt)
RU (1) RU2332727C2 (pt)
WO (1) WO2005083678A1 (pt)

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JPWO2009122757A1 (ja) * 2008-04-04 2011-07-28 パナソニック株式会社 ステレオ信号変換装置、ステレオ信号逆変換装置およびこれらの方法
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EP3483879A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analysis/synthesis windowing function for modulated lapped transformation
EP3483886A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Selecting pitch lag
EP3483880A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Temporal noise shaping
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
EP3483883A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding and decoding with selective postfiltering
WO2019091573A1 (en) 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters
EP3483882A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlling bandwidth in encoders and/or decoders
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Also Published As

Publication number Publication date
WO2005083678A1 (de) 2005-09-09
NO339114B1 (no) 2016-11-14
CA2558161C (en) 2010-05-11
KR20060121982A (ko) 2006-11-29
EP1697930A1 (de) 2006-09-06
BRPI0507207A8 (pt) 2018-06-12
RU2006134641A (ru) 2008-04-10
DE102004009954A1 (de) 2005-09-29
CN1926608B (zh) 2010-05-05
KR100823097B1 (ko) 2008-04-18
ES2286798T3 (es) 2007-12-01
HK1095194A1 (en) 2007-04-27
AU2005217517B2 (en) 2008-06-26
EP1697930B1 (de) 2007-06-13
BRPI0507207B1 (pt) 2018-12-26
CN1926608A (zh) 2007-03-07
CA2558161A1 (en) 2005-09-09
AU2005217517A1 (en) 2005-09-09
JP4413257B2 (ja) 2010-02-10
US20070033056A1 (en) 2007-02-08
DK1697930T3 (da) 2007-10-08
DE502005000864D1 (de) 2007-07-26
IL177213A (en) 2011-10-31
ATE364882T1 (de) 2007-07-15
RU2332727C2 (ru) 2008-08-27
JP2007525718A (ja) 2007-09-06
PT1697930E (pt) 2007-09-25
IL177213A0 (en) 2006-12-10
DE102004009954B4 (de) 2005-12-15
NO20064431L (no) 2006-09-29
US7340391B2 (en) 2008-03-04

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Legal Events

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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.