IL165941A0 - Audio channel spatial translation - Google Patents

Audio channel spatial translation

Info

Publication number
IL165941A0
IL165941A0 IL16594104A IL16594104A IL165941A0 IL 165941 A0 IL165941 A0 IL 165941A0 IL 16594104 A IL16594104 A IL 16594104A IL 16594104 A IL16594104 A IL 16594104A IL 165941 A0 IL165941 A0 IL 165941A0
Authority
IL
Israel
Prior art keywords
input signals
correlation
signals
compact
audio channel
Prior art date
Application number
IL16594104A
Other versions
IL165941A (en
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
Priority claimed from PCT/US2003/024570 external-priority patent/WO2004019656A2/en
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of IL165941A0 publication Critical patent/IL165941A0/en
Publication of IL165941A publication Critical patent/IL165941A/en

Links

Classifications

    • 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
    • H04S3/02—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
    • 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 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Machine Translation (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

Using an M:N variable matrix, M audio input signals, each associated with a direction, are translated to N audio output signals, each associated with a direction, wherein N is larger than M, M is two or more and N is a positive integer equal to three or more. The variable matrix is controlled in response to measures of: (1) the relative levels of the input signals, and (2) the cross-correlation of the input signals so that a soundfield generated by the output signals has a compact sound image in the direction of the spatial center of gravity of the input signals when the input signals are highly correlated, the image spreading from compact to broad as the correlation decreases and progressively splitting into multiple compact sound images, each in a direction associated with an input signal, as the correlation continues to decrease to highly uncorrelated.
IL165941A 2002-08-07 2004-12-22 Audio channel spatial translation IL165941A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40198302P 2002-08-07 2002-08-07
PCT/US2003/024570 WO2004019656A2 (en) 2001-02-07 2003-08-06 Audio channel spatial translation

Publications (2)

Publication Number Publication Date
IL165941A0 true IL165941A0 (en) 2006-01-15
IL165941A IL165941A (en) 2010-06-30

Family

ID=33489220

Family Applications (1)

Application Number Title Priority Date Filing Date
IL165941A IL165941A (en) 2002-08-07 2004-12-22 Audio channel spatial translation

Country Status (17)

Country Link
EP (1) EP1527655B1 (en)
JP (1) JP4434951B2 (en)
KR (1) KR100988293B1 (en)
CN (1) CN1672464B (en)
AT (1) ATE341923T1 (en)
AU (1) AU2003278704B2 (en)
BR (2) BRPI0305746B1 (en)
CA (1) CA2494454C (en)
DE (1) DE60308876T2 (en)
DK (1) DK1527655T3 (en)
ES (1) ES2271654T3 (en)
HK (1) HK1073963A1 (en)
IL (1) IL165941A (en)
MX (1) MXPA05001413A (en)
MY (1) MY139849A (en)
PL (1) PL373120A1 (en)
TW (1) TWI315828B (en)

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DE602005009244D1 (en) * 2004-11-23 2008-10-02 Koninkl Philips Electronics Nv DEVICE AND METHOD FOR PROCESSING AUDIO DATA, COMPUTER PROGRAM ELEMENT AND COMPUTER READABLE MEDIUM
TWI397901B (en) * 2004-12-21 2013-06-01 Dolby Lab Licensing Corp Method for controlling a particular loudness characteristic of an audio signal, and apparatus and computer program associated therewith
EP1905004A2 (en) 2005-05-26 2008-04-02 LG Electronics Inc. Method of encoding and decoding an audio signal
US8073702B2 (en) 2005-06-30 2011-12-06 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
JP2009500656A (en) 2005-06-30 2009-01-08 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
US8185403B2 (en) 2005-06-30 2012-05-22 Lg Electronics Inc. Method and apparatus for encoding and decoding an audio signal
US8577483B2 (en) 2005-08-30 2013-11-05 Lg Electronics, Inc. Method for decoding an audio signal
WO2007055463A1 (en) 2005-08-30 2007-05-18 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
US7987097B2 (en) 2005-08-30 2011-07-26 Lg Electronics Method for decoding an audio signal
US7788107B2 (en) 2005-08-30 2010-08-31 Lg Electronics Inc. Method for decoding an audio signal
US8068569B2 (en) 2005-10-05 2011-11-29 Lg Electronics, Inc. Method and apparatus for signal processing and encoding and decoding
WO2007040361A1 (en) 2005-10-05 2007-04-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7696907B2 (en) 2005-10-05 2010-04-13 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7646319B2 (en) 2005-10-05 2010-01-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7672379B2 (en) 2005-10-05 2010-03-02 Lg Electronics Inc. Audio signal processing, encoding, and decoding
KR100857113B1 (en) 2005-10-05 2008-09-08 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7751485B2 (en) 2005-10-05 2010-07-06 Lg Electronics Inc. Signal processing using pilot based coding
US7742913B2 (en) 2005-10-24 2010-06-22 Lg Electronics Inc. Removing time delays in signal paths
US7965848B2 (en) 2006-03-29 2011-06-21 Dolby International Ab Reduced number of channels decoding
WO2010004155A1 (en) * 2008-06-26 2010-01-14 France Telecom Spatial synthesis of multichannel audio signals
US9628934B2 (en) 2008-12-18 2017-04-18 Dolby Laboratories Licensing Corporation Audio channel spatial translation
WO2010113434A1 (en) * 2009-03-31 2010-10-07 パナソニック株式会社 Sound reproduction system and method
CN101527874B (en) * 2009-04-28 2011-03-23 张勤 Dynamic sound field system
TWI444989B (en) 2010-01-22 2014-07-11 Dolby Lab Licensing Corp Using multichannel decorrelation for improved multichannel upmixing
WO2012042905A1 (en) * 2010-09-30 2012-04-05 パナソニック株式会社 Sound reproduction device and sound reproduction method
JP5957137B2 (en) * 2012-03-22 2016-07-27 ディラック リサーチ エービー Design of an audio pre-compensation controller using a variable set of assist loudspeakers
EP2830332A3 (en) 2013-07-22 2015-03-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method, signal processing unit, and computer program for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration
EP2830051A3 (en) 2013-07-22 2015-03-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder, audio decoder, methods and computer program using jointly encoded residual signals
SG11201710080XA (en) * 2015-06-24 2018-01-30 Sony Corp Audio processing apparatus and method, and program
CN106604199B (en) * 2016-12-23 2018-09-18 湖南国科微电子股份有限公司 A kind of matrix disposal method and device of digital audio and video signals
US11019449B2 (en) * 2018-10-06 2021-05-25 Qualcomm Incorporated Six degrees of freedom and three degrees of freedom backward compatibility
KR102599744B1 (en) * 2018-12-07 2023-11-08 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 Apparatus, methods, and computer programs for encoding, decoding, scene processing, and other procedures related to DirAC-based spatial audio coding using directional component compensation.
TWI740206B (en) * 2019-09-16 2021-09-21 宏碁股份有限公司 Correction system and correction method of signal measurement
CN114327040A (en) * 2021-11-25 2022-04-12 歌尔股份有限公司 Vibration signal generation method, device, electronic device and storage medium

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US6009179A (en) * 1997-01-24 1999-12-28 Sony Corporation Method and apparatus for electronically embedding directional cues in two channels of sound
US6072878A (en) * 1997-09-24 2000-06-06 Sonic Solutions Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics
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EP1054575A3 (en) * 1999-05-17 2002-09-18 Bose Corporation Directional decoding

Also Published As

Publication number Publication date
JP2005535266A (en) 2005-11-17
CA2494454C (en) 2013-10-01
ATE341923T1 (en) 2006-10-15
DK1527655T3 (en) 2007-01-29
BRPI0305746B1 (en) 2018-03-20
AU2003278704A1 (en) 2004-03-11
HK1073963A1 (en) 2005-10-21
CA2494454A1 (en) 2004-03-04
MXPA05001413A (en) 2005-06-06
TWI315828B (en) 2009-10-11
CN1672464B (en) 2010-07-28
EP1527655B1 (en) 2006-10-04
KR20050035878A (en) 2005-04-19
ES2271654T3 (en) 2007-04-16
KR100988293B1 (en) 2010-10-18
AU2003278704B2 (en) 2009-04-23
MY139849A (en) 2009-11-30
EP1527655A2 (en) 2005-05-04
IL165941A (en) 2010-06-30
DE60308876T2 (en) 2007-03-01
BR0305746A (en) 2004-12-07
DE60308876D1 (en) 2006-11-16
CN1672464A (en) 2005-09-21
PL373120A1 (en) 2005-08-08
TW200404222A (en) 2004-03-16
JP4434951B2 (en) 2010-03-17

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