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

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) BR0305746A (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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JP5227794B2 (en) 2005-06-30 2013-07-03 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
WO2007004833A2 (en) 2005-06-30 2007-01-11 Lg Electronics Inc. Method and apparatus for encoding and decoding an audio signal
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US8577483B2 (en) 2005-08-30 2013-11-05 Lg Electronics, Inc. Method for decoding an audio signal
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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
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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
WO2007040349A1 (en) 2005-10-05 2007-04-12 Lg Electronics Inc. Method and apparatus for signal processing
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KR100857121B1 (en) 2005-10-05 2008-09-05 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
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US7965848B2 (en) 2006-03-29 2011-06-21 Dolby International Ab Reduced number of channels decoding
CN102077276B (en) * 2008-06-26 2014-04-09 法国电信公司 Spatial synthesis of multichannel audio signals
CN104837107B (en) * 2008-12-18 2017-05-10 杜比实验室特许公司 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
US9008338B2 (en) * 2010-09-30 2015-04-14 Panasonic Intellectual Property Management Co., Ltd. Audio reproduction apparatus and audio reproduction method
KR101895656B1 (en) * 2012-03-22 2018-10-18 디락 리서치 에이비 Audio Precompensation Controller Design Using a Variable Set of Support Loudspeakers
EP2830052A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder, audio encoder, method for providing at least four audio channel signals on the basis of an encoded representation, method for providing an encoded representation on the basis of at least four audio channel signals and computer program using a bandwidth extension
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
BR122022019910B1 (en) * 2015-06-24 2024-03-12 Sony Corporation AUDIO PROCESSING APPARATUS AND METHOD, AND COMPUTER READABLE NON-TRAINER STORAGE MEDIUM
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
KR20230112750A (en) 2018-12-07 2023-07-27 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 APPARATUS, METHOD AND COMPUTER PROGRAM FOR ENCODING, DECODING, SCENE PROCESSING AND OTHER PROCEDURES RELATED TO DirAC BASED SPATIAL AUDIO CODING USING DIRECT 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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Also Published As

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

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