EP1054575A3 - Directional decoding - Google Patents

Directional decoding Download PDF

Info

Publication number
EP1054575A3
EP1054575A3 EP00304128A EP00304128A EP1054575A3 EP 1054575 A3 EP1054575 A3 EP 1054575A3 EP 00304128 A EP00304128 A EP 00304128A EP 00304128 A EP00304128 A EP 00304128A EP 1054575 A3 EP1054575 A3 EP 1054575A3
Authority
EP
European Patent Office
Prior art keywords
directional decoding
correlation
decoding
directional
uncorrelation
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP00304128A
Other languages
German (de)
French (fr)
Other versions
EP1054575A2 (en
Inventor
Richard J. Aylward
Hilmar Lehnert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bose Corp
Original Assignee
Bose 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 US09/313,058 external-priority patent/US7016501B1/en
Application filed by Bose Corp filed Critical Bose Corp
Publication of EP1054575A2 publication Critical patent/EP1054575A2/en
Publication of EP1054575A3 publication Critical patent/EP1054575A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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 
    • H04S5/005—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 five- or more-channel type, e.g. virtual surround
    • 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
    • H04S2400/05—Generation or adaptation of centre channel in multi-channel audio systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The degree of correlation between two audio signals is determined and the channels are normalised according to first and second normalisation modes responsive to correlation and uncorrelation respectively.
EP00304128A 1999-05-17 2000-05-16 Directional decoding Withdrawn EP1054575A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US313058 1981-10-19
US09/313,058 US7016501B1 (en) 1997-02-07 1999-05-17 Directional decoding

Publications (2)

Publication Number Publication Date
EP1054575A2 EP1054575A2 (en) 2000-11-22
EP1054575A3 true EP1054575A3 (en) 2002-09-18

Family

ID=23214203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00304128A Withdrawn EP1054575A3 (en) 1999-05-17 2000-05-16 Directional decoding

Country Status (4)

Country Link
EP (1) EP1054575A3 (en)
JP (1) JP2000350300A (en)
CN (1) CN100349497C (en)
HK (1) HK1032705A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002251896B2 (en) * 2001-02-07 2007-03-22 Dolby Laboratories Licensing Corporation Audio channel translation
US7660424B2 (en) 2001-02-07 2010-02-09 Dolby Laboratories Licensing Corporation Audio channel spatial translation
WO2004019656A2 (en) * 2001-02-07 2004-03-04 Dolby Laboratories Licensing Corporation Audio channel spatial translation
PL373120A1 (en) * 2002-08-07 2005-08-08 Dolby Laboratories Licensing Corporation Audio channel spatial translation
CA3026267C (en) * 2004-03-01 2019-04-16 Dolby Laboratories Licensing Corporation Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters
WO2006008697A1 (en) 2004-07-14 2006-01-26 Koninklijke Philips Electronics N.V. Audio channel conversion
US7283634B2 (en) * 2004-08-31 2007-10-16 Dts, Inc. Method of mixing audio channels using correlated outputs
US7787631B2 (en) * 2004-11-30 2010-08-31 Agere Systems Inc. Parametric coding of spatial audio with cues based on transmitted channels
US8032240B2 (en) 2005-07-11 2011-10-04 Lg Electronics Inc. Apparatus and method of processing an audio signal
CN101351839B (en) * 2005-09-14 2012-07-04 Lg电子株式会社 Method and apparatus for decoding an audio signal
KR100857105B1 (en) 2005-09-14 2008-09-05 엘지전자 주식회사 Method and apparatus for decoding an audio signal
JP4875142B2 (en) * 2006-03-28 2012-02-15 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Method and apparatus for a decoder for multi-channel surround sound
RU2728535C2 (en) * 2015-09-25 2020-07-30 Войсэйдж Корпорейшн Method and system using difference of long-term correlations between left and right channels for downmixing in time area of stereophonic audio signal to primary and secondary channels

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01144900A (en) * 1987-12-01 1989-06-07 Matsushita Electric Ind Co Ltd Sound field reproducing device
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
JPH05236599A (en) * 1992-02-21 1993-09-10 Clarion Co Ltd Acoustic reproducing device with three speakers
EP0593128A1 (en) * 1992-10-15 1994-04-20 Koninklijke Philips Electronics N.V. Deriving system for deriving a centre channel signal from a stereophonic audio signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03110999A (en) * 1989-09-25 1991-05-10 Sharp Corp 4-channel stereo emphasis circuit
US5572591A (en) 1993-03-09 1996-11-05 Matsushita Electric Industrial Co., Ltd. Sound field controller
US5727068A (en) 1996-03-01 1998-03-10 Cinema Group, Ltd. Matrix decoding method and apparatus
US6711266B1 (en) * 1997-02-07 2004-03-23 Bose Corporation Surround sound channel encoding and decoding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
JPH01144900A (en) * 1987-12-01 1989-06-07 Matsushita Electric Ind Co Ltd Sound field reproducing device
JPH05236599A (en) * 1992-02-21 1993-09-10 Clarion Co Ltd Acoustic reproducing device with three speakers
EP0593128A1 (en) * 1992-10-15 1994-04-20 Koninklijke Philips Electronics N.V. Deriving system for deriving a centre channel signal from a stereophonic audio signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 404 (E - 817) 7 September 1989 (1989-09-07) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 698 (E - 1481) 20 December 1993 (1993-12-20) *

Also Published As

Publication number Publication date
CN1281329A (en) 2001-01-24
EP1054575A2 (en) 2000-11-22
HK1032705A1 (en) 2001-07-27
CN100349497C (en) 2007-11-14
JP2000350300A (en) 2000-12-15

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