HK1073963A1 - Audio channel spatial translation - Google Patents

Audio channel spatial translation

Info

Publication number
HK1073963A1
HK1073963A1 HK05106538A HK05106538A HK1073963A1 HK 1073963 A1 HK1073963 A1 HK 1073963A1 HK 05106538 A HK05106538 A HK 05106538A HK 05106538 A HK05106538 A HK 05106538A HK 1073963 A1 HK1073963 A1 HK 1073963A1
Authority
HK
Hong Kong
Prior art keywords
input signals
correlation
signals
compact
audio channel
Prior art date
Application number
HK05106538A
Inventor
Davis Mark Franklin
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 HK1073963A1 publication Critical patent/HK1073963A1/en

Links

Classifications

    • 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 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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

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.
HK05106538A 2002-08-07 2005-08-01 Audio channel spatial translation HK1073963A1 (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 (1)

Publication Number Publication Date
HK1073963A1 true HK1073963A1 (en) 2005-10-21

Family

ID=33489220

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05106538A HK1073963A1 (en) 2002-08-07 2005-08-01 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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ATE557386T1 (en) * 2008-06-26 2012-05-15 France Telecom SPATIAL SYNTHESIS OF MULTI-CHANNEL SOUND SIGNALS
EP2398257B1 (en) 2008-12-18 2017-05-10 Dolby Laboratories Licensing Corporation Audio channel spatial translation
JP5314129B2 (en) * 2009-03-31 2013-10-16 パナソニック株式会社 Sound reproducing apparatus and sound reproducing 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
ES2683821T3 (en) * 2012-03-22 2018-09-28 Dirac Research Ab Audio precompensation controller design using a variable set of support speakers
EP2830335A3 (en) 2013-07-22 2015-02-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method, and computer program for mapping first and second input channels to at least one output channel
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
AU2016283182B2 (en) * 2015-06-24 2019-05-16 Sony Corporation Device, method, and program for processing sound
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
FI3891736T3 (en) * 2018-12-07 2023-04-14 Fraunhofer Ges Forschung Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to dirac based spatial audio coding using low-order, mid-order and high-order components generators
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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Also Published As

Publication number Publication date
CN1672464B (en) 2010-07-28
DK1527655T3 (en) 2007-01-29
JP4434951B2 (en) 2010-03-17
EP1527655B1 (en) 2006-10-04
BRPI0305746B1 (en) 2018-03-20
TWI315828B (en) 2009-10-11
AU2003278704A1 (en) 2004-03-11
KR20050035878A (en) 2005-04-19
ATE341923T1 (en) 2006-10-15
CN1672464A (en) 2005-09-21
CA2494454A1 (en) 2004-03-04
DE60308876T2 (en) 2007-03-01
EP1527655A2 (en) 2005-05-04
DE60308876D1 (en) 2006-11-16
PL373120A1 (en) 2005-08-08
BR0305746A (en) 2004-12-07
IL165941A (en) 2010-06-30
MXPA05001413A (en) 2005-06-06
JP2005535266A (en) 2005-11-17
KR100988293B1 (en) 2010-10-18
TW200404222A (en) 2004-03-16
AU2003278704B2 (en) 2009-04-23
ES2271654T3 (en) 2007-04-16
CA2494454C (en) 2013-10-01
MY139849A (en) 2009-11-30
IL165941A0 (en) 2006-01-15

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Legal Events

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PE Patent expired

Effective date: 20230805