TWI315828B - Audio channel spatial translation - Google Patents

Audio channel spatial translation

Info

Publication number
TWI315828B
TWI315828B TW092121482A TW92121482A TWI315828B TW I315828 B TWI315828 B TW I315828B TW 092121482 A TW092121482 A TW 092121482A TW 92121482 A TW92121482 A TW 92121482A TW I315828 B TWI315828 B TW I315828B
Authority
TW
Taiwan
Prior art keywords
input signals
correlation
signals
compact
audio channel
Prior art date
Application number
TW092121482A
Other languages
Chinese (zh)
Other versions
TW200404222A (en
Inventor
Franklin Davis Mark
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 TW200404222A publication Critical patent/TW200404222A/en
Application granted granted Critical
Publication of TWI315828B publication Critical patent/TWI315828B/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.
TW092121482A 2002-08-07 2003-08-06 Audio channel spatial translation TWI315828B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40198302P 2002-08-07 2002-08-07

Publications (2)

Publication Number Publication Date
TW200404222A TW200404222A (en) 2004-03-16
TWI315828B true TWI315828B (en) 2009-10-11

Family

ID=33489220

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092121482A TWI315828B (en) 2002-08-07 2003-08-06 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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JP5461835B2 (en) 2005-05-26 2014-04-02 エルジー エレクトロニクス インコーポレイティド Audio signal encoding / decoding method and encoding / decoding device
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WO2007004831A1 (en) 2005-06-30 2007-01-11 Lg Electronics Inc. Method and apparatus for 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
JP4859925B2 (en) 2005-08-30 2012-01-25 エルジー エレクトロニクス インコーポレイティド Audio signal decoding method and apparatus
WO2007055464A1 (en) 2005-08-30 2007-05-18 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
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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
KR100857120B1 (en) 2005-10-05 2008-09-05 엘지전자 주식회사 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
WO2007040355A1 (en) 2005-10-05 2007-04-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
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US7752053B2 (en) 2006-01-13 2010-07-06 Lg Electronics Inc. Audio signal processing using pilot based coding
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WO2010004155A1 (en) * 2008-06-26 2010-01-14 France Telecom 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
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
JP5323210B2 (en) * 2010-09-30 2013-10-23 パナソニック株式会社 Sound reproduction apparatus 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
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
EP3680898B1 (en) * 2015-06-24 2024-03-27 Sony Group Corporation 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
AU2019392876B2 (en) 2018-12-07 2023-04-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. 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
CN1672464B (en) 2010-07-28
AU2003278704A1 (en) 2004-03-11
PL373120A1 (en) 2005-08-08
EP1527655B1 (en) 2006-10-04
CA2494454A1 (en) 2004-03-04
EP1527655A2 (en) 2005-05-04
DE60308876T2 (en) 2007-03-01
DE60308876D1 (en) 2006-11-16
BRPI0305746B1 (en) 2018-03-20
MXPA05001413A (en) 2005-06-06
ES2271654T3 (en) 2007-04-16
KR100988293B1 (en) 2010-10-18
AU2003278704B2 (en) 2009-04-23
KR20050035878A (en) 2005-04-19
JP4434951B2 (en) 2010-03-17
CN1672464A (en) 2005-09-21
TW200404222A (en) 2004-03-16
ATE341923T1 (en) 2006-10-15
HK1073963A1 (en) 2005-10-21
IL165941A (en) 2010-06-30
MY139849A (en) 2009-11-30
DK1527655T3 (en) 2007-01-29
JP2005535266A (en) 2005-11-17
BR0305746A (en) 2004-12-07
CA2494454C (en) 2013-10-01
IL165941A0 (en) 2006-01-15

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