AU2002211400A1 - Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio - Google Patents

Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio

Info

Publication number
AU2002211400A1
AU2002211400A1 AU2002211400A AU1140002A AU2002211400A1 AU 2002211400 A1 AU2002211400 A1 AU 2002211400A1 AU 2002211400 A AU2002211400 A AU 2002211400A AU 1140002 A AU1140002 A AU 1140002A AU 2002211400 A1 AU2002211400 A1 AU 2002211400A1
Authority
AU
Australia
Prior art keywords
audio
decoding
channel matrix
matrix encoded
encoded audio
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.)
Abandoned
Application number
AU2002211400A
Inventor
William P. Smith
Stephen M. Smyth
Ming Yan
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.)
DTS Inc
Original Assignee
Digital Theater Systems Inc
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 Digital Theater Systems Inc filed Critical Digital Theater Systems Inc
Publication of AU2002211400A1 publication Critical patent/AU2002211400A1/en
Abandoned 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 
    • H04S5/02—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
    • 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 
    • H04S5/005—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 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing
AU2002211400A 2000-10-06 2001-10-04 Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio Abandoned AU2002211400A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/680,737 2000-10-06
US09/680,737 US7003467B1 (en) 2000-10-06 2000-10-06 Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio
PCT/US2001/030997 WO2002032186A2 (en) 2000-10-06 2001-10-04 Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio

Publications (1)

Publication Number Publication Date
AU2002211400A1 true AU2002211400A1 (en) 2002-04-22

Family

ID=24732305

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002211400A Abandoned AU2002211400A1 (en) 2000-10-06 2001-10-04 Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio

Country Status (11)

Country Link
US (2) US7003467B1 (en)
EP (1) EP1354495B1 (en)
JP (1) JP2004529515A (en)
KR (1) KR100666019B1 (en)
CN (1) CN100496149C (en)
AU (1) AU2002211400A1 (en)
CA (1) CA2423893C (en)
HK (1) HK1071271A1 (en)
IL (2) IL155129A0 (en)
TR (1) TR200300428T2 (en)
WO (1) WO2002032186A2 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7003467B1 (en) * 2000-10-06 2006-02-21 Digital Theater Systems, Inc. Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio
US7660424B2 (en) 2001-02-07 2010-02-09 Dolby Laboratories Licensing Corporation Audio channel spatial translation
US7240001B2 (en) 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
CA2424093A1 (en) * 2003-03-31 2004-09-30 Dspfactory Ltd. Method and device for acoustic shock protection
US7929708B2 (en) * 2004-01-12 2011-04-19 Dts, Inc. Audio spatial environment engine
GB2410164A (en) * 2004-01-16 2005-07-20 Anthony John Andrews Sound feature positioner
US7460990B2 (en) * 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
US7853022B2 (en) * 2004-10-28 2010-12-14 Thompson Jeffrey K Audio spatial environment engine
US20060106620A1 (en) * 2004-10-28 2006-05-18 Thompson Jeffrey K Audio spatial environment down-mixer
US7983922B2 (en) 2005-04-15 2011-07-19 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing
US7562021B2 (en) * 2005-07-15 2009-07-14 Microsoft Corporation Modification of codewords in dictionary used for efficient coding of digital media spectral data
US7630882B2 (en) * 2005-07-15 2009-12-08 Microsoft Corporation Frequency segmentation to obtain bands for efficient coding of digital media
JP5328637B2 (en) * 2007-02-20 2013-10-30 パナソニック株式会社 Multi-channel decoding device, multi-channel decoding method, program, and semiconductor integrated circuit
ES2358786T3 (en) * 2007-06-08 2011-05-13 Dolby Laboratories Licensing Corporation HYBRID DERIVATION OF SURROUND SOUND AUDIO CHANNELS COMBINING CONTROLLING SOUND COMPONENTS OF ENVIRONMENTAL SOUND SIGNALS AND WITH MATRICIAL DECODIFICATION.
US7761290B2 (en) 2007-06-15 2010-07-20 Microsoft Corporation Flexible frequency and time partitioning in perceptual transform coding of audio
US8046214B2 (en) * 2007-06-22 2011-10-25 Microsoft Corporation Low complexity decoder for complex transform coding of multi-channel sound
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
US8249883B2 (en) * 2007-10-26 2012-08-21 Microsoft Corporation Channel extension coding for multi-channel source
KR101415026B1 (en) * 2007-11-19 2014-07-04 삼성전자주식회사 Method and apparatus for acquiring the multi-channel sound with a microphone array
KR101439205B1 (en) 2007-12-21 2014-09-11 삼성전자주식회사 Method and apparatus for audio matrix encoding/decoding
JP5243553B2 (en) * 2008-01-01 2013-07-24 エルジー エレクトロニクス インコーポレイティド Audio signal processing method and apparatus
US8654994B2 (en) 2008-01-01 2014-02-18 Lg Electronics Inc. Method and an apparatus for processing an audio signal
TWI449442B (en) 2009-01-14 2014-08-11 Dolby Lab Licensing Corp Method and system for frequency domain active matrix decoding without feedback
BR122019023684B1 (en) 2009-01-16 2020-05-05 Dolby Int Ab system for generating a high frequency component of an audio signal and method for performing high frequency reconstruction of a high frequency component
KR20110022252A (en) * 2009-08-27 2011-03-07 삼성전자주식회사 Method and apparatus for encoding/decoding stereo audio
EP2510709A4 (en) * 2009-12-10 2015-04-08 Reality Ip Pty Ltd Improved matrix decoder for surround sound
KR101785379B1 (en) * 2010-12-31 2017-10-16 삼성전자주식회사 Method and apparatus for controlling distribution of spatial sound energy
US8693697B2 (en) * 2011-06-06 2014-04-08 Reality Ip Pty Ltd Matrix encoder with improved channel separation
WO2014062509A1 (en) 2012-10-18 2014-04-24 Dolby Laboratories Licensing Corporation Systems and methods for initiating conferences using external devices
EP2830056A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain
KR102114440B1 (en) 2013-07-30 2020-05-22 디티에스, 인코포레이티드 Matrix decoder with constant-power pairwise panning
PL3074969T3 (en) 2013-11-27 2019-05-31 Dts Inc Multiplet-based matrix mixing for high-channel count multichannel audio
US9917662B2 (en) * 2014-01-22 2018-03-13 Siemens Aktiengesellschaft Digital measurement input for an electric automation device, electric automation device comprising a digital measurement input, and method for processing digital input measurement values
US9306606B2 (en) * 2014-06-10 2016-04-05 The Boeing Company Nonlinear filtering using polyphase filter banks
JP6569571B2 (en) 2016-03-15 2019-09-04 ヤマハ株式会社 Signal processing apparatus and signal processing method
JP6969368B2 (en) 2017-12-27 2021-11-24 ヤマハ株式会社 An audio data processing device and a control method for the audio data processing device.
JP2019205114A (en) 2018-05-25 2019-11-28 ヤマハ株式会社 Data processing apparatus and data processing method
EP4226651A1 (en) * 2020-10-07 2023-08-16 Clang A method of outputting sound and a loudspeaker

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514162A (en) * 1974-03-25 1978-06-14 Ruggles W Directional enhancement system for quadraphonic decoders
US4704728A (en) * 1984-12-31 1987-11-03 Peter Scheiber Signal re-distribution, decoding and processing in accordance with amplitude, phase, and other characteristics
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
US5172415A (en) * 1990-06-08 1992-12-15 Fosgate James W Surround processor
JP3449715B2 (en) * 1991-01-08 2003-09-22 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション Encoder / decoder for multi-dimensional sound field
US5274740A (en) * 1991-01-08 1993-12-28 Dolby Laboratories Licensing Corporation Decoder for variable number of channel presentation of multidimensional sound fields
JP2509789B2 (en) * 1992-08-22 1996-06-26 三星電子株式会社 Acoustic signal distortion correction device using audible frequency band division
US5319713A (en) * 1992-11-12 1994-06-07 Rocktron Corporation Multi dimensional sound circuit
FI102799B1 (en) * 1993-06-15 1999-02-15 Nokia Technology Gmbh Improved Dolby Prologic decoder
TW272341B (en) * 1993-07-16 1996-03-11 Sony Co Ltd
JP3404837B2 (en) * 1993-12-07 2003-05-12 ソニー株式会社 Multi-layer coding device
EP0688113A2 (en) * 1994-06-13 1995-12-20 Sony Corporation Method and apparatus for encoding and decoding digital audio signals and apparatus for recording digital audio
US5796844A (en) * 1996-07-19 1998-08-18 Lexicon Multichannel active matrix sound reproduction with maximum lateral separation
US5870480A (en) * 1996-07-19 1999-02-09 Lexicon Multichannel active matrix encoder and decoder with maximum lateral separation
US6970567B1 (en) 1999-12-03 2005-11-29 Dolby Laboratories Licensing Corporation Method and apparatus for deriving at least one audio signal from two or more input audio signals
TW510143B (en) 1999-12-03 2002-11-11 Dolby Lab Licensing Corp Method for deriving at least three audio signals from two input audio signals
MXPA03001852A (en) 2000-08-31 2003-09-10 Dolby Lab Licensing Corp Method for apparatus for audio matrix decoding.
US7003467B1 (en) * 2000-10-06 2006-02-21 Digital Theater Systems, Inc. Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio

Also Published As

Publication number Publication date
IL155129A0 (en) 2003-10-31
HK1071271A1 (en) 2005-07-08
WO2002032186A2 (en) 2002-04-18
CA2423893A1 (en) 2002-04-18
KR20030038786A (en) 2003-05-16
TR200300428T2 (en) 2005-12-21
KR100666019B1 (en) 2007-01-10
JP2004529515A (en) 2004-09-24
US7003467B1 (en) 2006-02-21
CA2423893C (en) 2006-04-25
EP1354495A2 (en) 2003-10-22
EP1354495B1 (en) 2013-04-10
WO2002032186A3 (en) 2003-08-14
CN1575621A (en) 2005-02-02
IL155129A (en) 2009-11-18
US20060095269A1 (en) 2006-05-04
CN100496149C (en) 2009-06-03

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