IN2015MN01952A - - Google Patents

Info

Publication number
IN2015MN01952A
IN2015MN01952A IN1952MUN2015A IN2015MN01952A IN 2015MN01952 A IN2015MN01952 A IN 2015MN01952A IN 1952MUN2015 A IN1952MUN2015 A IN 1952MUN2015A IN 2015MN01952 A IN2015MN01952 A IN 2015MN01952A
Authority
IN
India
Prior art keywords
audio
icc
decorrelation
channel
idc
Prior art date
Application number
Inventor
Kuan Chieh YEN
Vinay Melkote
Matthew Fellers
Grant A Davidson
Original Assignee
Dolby Lab 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.)
Filing date
Publication date
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of IN2015MN01952A publication Critical patent/IN2015MN01952A/en

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
    • G10L19/008—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 
    • 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 
    • 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)
  • Mathematical Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Stereophonic System (AREA)
  • Telephonic Communication Services (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Audio characteristics of audio data corresponding to a plurality of audio channels may be determined. The audio characteristics may include spatial parameter data. Decorrelation filtering processes for the audio data may be based at least in part on the audio characteristics. The decorrelation filtering processes may cause a specific inter decorrelation signal coherence ('IDC') between channel specific decorrelation signals for at least one pair of channels. The channel specific decorrelation signals may be received and/or determined. Inter channel coherence ('ICC') between a plurality of audio channel pairs may be controlled. Controlling ICC may involve at receiving an ICC value and/or determining an ICC value based at least partially on the spatial parameter data. A set of IDC values may be based at least partially on the set of ICC values. A set of channel specific decorrelation signals corresponding with the set of IDC values may be synthesized by performing operations on the filtered audio data.
IN1952MUN2015 2013-02-14 2014-01-22 IN2015MN01952A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361764857P 2013-02-14 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 (1)

Publication Number Publication Date
IN2015MN01952A true IN2015MN01952A (en) 2015-08-28

Family

ID=50071787

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1952MUN2015 IN2015MN01952A (en) 2013-02-14 2014-01-22

Country Status (9)

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

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Also Published As

Publication number Publication date
RU2015133289A (en) 2017-02-15
KR101729930B1 (en) 2017-04-25
RU2630370C2 (en) 2017-09-07
JP6046274B2 (en) 2016-12-14
US9754596B2 (en) 2017-09-05
CN104981867A (en) 2015-10-14
BR112015018522B1 (en) 2021-12-14
JP2016510434A (en) 2016-04-07
HK1213687A1 (en) 2016-07-08
KR20150106962A (en) 2015-09-22
WO2014126689A1 (en) 2014-08-21
EP2956935B1 (en) 2017-01-04
CN104981867B (en) 2018-03-30
BR112015018522A2 (en) 2017-07-18
RU2630370C9 (en) 2017-09-26
US20160005406A1 (en) 2016-01-07
EP2956935A1 (en) 2015-12-23

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