BR112015018522A2 - métodos para controlar a coerência entre canais de sinais de áudio com upmix - Google Patents

métodos para controlar a coerência entre canais de sinais de áudio com upmix

Info

Publication number
BR112015018522A2
BR112015018522A2 BR112015018522A BR112015018522A BR112015018522A2 BR 112015018522 A2 BR112015018522 A2 BR 112015018522A2 BR 112015018522 A BR112015018522 A BR 112015018522A BR 112015018522 A BR112015018522 A BR 112015018522A BR 112015018522 A2 BR112015018522 A2 BR 112015018522A2
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BR
Brazil
Prior art keywords
audio
channel
icc
coherence
channels
Prior art date
Application number
BR112015018522A
Other languages
English (en)
Other versions
BR112015018522B1 (pt
Inventor
a davidson Grant
Yen Kuan-Chieh
Fellers Matthew
Melkote Vinay
Original Assignee
Dolby Laboratories Licensing Corp
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.)
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Publication date
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of BR112015018522A2 publication Critical patent/BR112015018522A2/pt
Publication of BR112015018522B1 publication Critical patent/BR112015018522B1/pt

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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
    • 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
    • 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
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing
    • 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 

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)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephonic Communication Services (AREA)

Abstract

resumo patente de invenção: "métodos para controlar a coerência entre canais de sinais de áudio com upmix". trata-se de características de áudio de dados de áudio que correspondem a uma pluralidade de canais de áudio. as características de áudio podem incluir dados de parâmetro espacial. os processos de filtragem de descorrelação para os dados de áudio podem ter como base, pelo menos em parte, as características de áudio. os processos de filtragem de descorrelação podem causar uma coerência de sinal entre descorrelações específica ("idc") entre sinais de descorrelação de canal específico para pelo menos um par de canais. os sinais de descorrelação de canal específico podem ser recebidos e/ou determinados. a coerência entre canais ("icc") entre uma pluralidade de pares de canais de áudio pode ser controlada. controlar a icc pode envolver receber um valor de icc e/ou determinar um valor de icc com base, pelo menos parcialmente, nos dados de parâmetro espacial. um conjunto de valores de idc pode ter como base, pelo menos parcialmente, o conjunto de valores de icc. um conjunto de sinais de descorrelação específicos a canal, que corresponde ao conjunto de valores de idc, pode ser sintetizado realizando-se operações nos dados de áudio filtrados.
BR112015018522-3A 2013-02-14 2014-01-22 Método, aparelho e meio não transitório que tem um método armazenado no mesmo para controlar a coerência entre canais de sinais de áudio com upmix. BR112015018522B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361764857P 2013-02-14 2013-02-14
US61/764857 2013-02-14
PCT/US2014/012599 WO2014126689A1 (en) 2013-02-14 2014-01-22 Methods for controlling the inter-channel coherence of upmixed audio signals

Publications (2)

Publication Number Publication Date
BR112015018522A2 true BR112015018522A2 (pt) 2017-07-18
BR112015018522B1 BR112015018522B1 (pt) 2021-12-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015018522-3A BR112015018522B1 (pt) 2013-02-14 2014-01-22 Método, aparelho e meio não transitório que tem um método armazenado no mesmo para controlar a coerência entre canais de sinais de áudio com upmix.

Country Status (10)

Country Link
US (1) US9754596B2 (pt)
EP (1) EP2956935B1 (pt)
JP (1) JP6046274B2 (pt)
KR (1) KR101729930B1 (pt)
CN (1) CN104981867B (pt)
BR (1) BR112015018522B1 (pt)
HK (1) HK1213687A1 (pt)
IN (1) IN2015MN01952A (pt)
RU (1) RU2630370C9 (pt)
WO (1) WO2014126689A1 (pt)

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Also Published As

Publication number Publication date
JP6046274B2 (ja) 2016-12-14
WO2014126689A1 (en) 2014-08-21
HK1213687A1 (zh) 2016-07-08
RU2015133289A (ru) 2017-02-15
EP2956935A1 (en) 2015-12-23
KR20150106962A (ko) 2015-09-22
RU2630370C2 (ru) 2017-09-07
KR101729930B1 (ko) 2017-04-25
CN104981867A (zh) 2015-10-14
BR112015018522B1 (pt) 2021-12-14
IN2015MN01952A (pt) 2015-08-28
US20160005406A1 (en) 2016-01-07
EP2956935B1 (en) 2017-01-04
US9754596B2 (en) 2017-09-05
RU2630370C9 (ru) 2017-09-26
JP2016510434A (ja) 2016-04-07
CN104981867B (zh) 2018-03-30

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