CA2392601C - Method for deriving at least three audio signals from two input audio signals - Google Patents

Method for deriving at least three audio signals from two input audio signals Download PDF

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Publication number
CA2392601C
CA2392601C CA2392601A CA2392601A CA2392601C CA 2392601 C CA2392601 C CA 2392601C CA 2392601 A CA2392601 A CA 2392601A CA 2392601 A CA2392601 A CA 2392601A CA 2392601 C CA2392601 C CA 2392601C
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Canada
Prior art keywords
signals
audio signals
passive matrix
pair
signal
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.)
Expired - Lifetime
Application number
CA2392601A
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English (en)
French (fr)
Other versions
CA2392601A1 (en
Inventor
James W. Fosgate
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.)
Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing Corp
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Filing date
Publication date
Priority claimed from US09/532,711 external-priority patent/US6920223B1/en
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of CA2392601A1 publication Critical patent/CA2392601A1/en
Application granted granted Critical
Publication of CA2392601C publication Critical patent/CA2392601C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
CA2392601A 1999-12-03 2000-11-28 Method for deriving at least three audio signals from two input audio signals Expired - Lifetime CA2392601C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US45481099A 1999-12-03 1999-12-03
US09/454,810 1999-12-03
US09/532,711 2000-03-22
US09/532,711 US6920223B1 (en) 1999-12-03 2000-03-22 Method for deriving at least three audio signals from two input audio signals
PCT/US2000/032383 WO2001041504A1 (en) 1999-12-03 2000-11-28 Method for deriving at least three audio signals from two input audio signals

Publications (2)

Publication Number Publication Date
CA2392601A1 CA2392601A1 (en) 2001-06-07
CA2392601C true CA2392601C (en) 2012-07-17

Family

ID=27037614

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2392601A Expired - Lifetime CA2392601C (en) 1999-12-03 2000-11-28 Method for deriving at least three audio signals from two input audio signals

Country Status (14)

Country Link
EP (1) EP1234484B1 (enExample)
JP (1) JP4540285B2 (enExample)
CN (1) CN1226901C (enExample)
AT (1) ATE272303T1 (enExample)
AU (1) AU784855B2 (enExample)
BR (1) BRPI0015969B1 (enExample)
CA (1) CA2392601C (enExample)
DE (1) DE60012568T2 (enExample)
DK (1) DK1234484T3 (enExample)
ES (1) ES2220572T3 (enExample)
MX (1) MXPA02005521A (enExample)
TR (1) TR200402241T4 (enExample)
TW (1) TW510143B (enExample)
WO (1) WO2001041504A1 (enExample)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7280664B2 (en) 2000-08-31 2007-10-09 Dolby Laboratories Licensing Corporation 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
CA3026276C (en) 2004-03-01 2019-04-16 Dolby Laboratories Licensing Corporation Reconstructing audio signals with multiple decorrelation techniques
SE0400997D0 (sv) * 2004-04-16 2004-04-16 Cooding Technologies Sweden Ab Efficient coding of multi-channel audio
KR100725818B1 (ko) 2004-07-14 2007-06-11 삼성전자주식회사 최적 가상음원을 제공하는 음향재생장치 및 음향재생방법
JP4580210B2 (ja) 2004-10-19 2010-11-10 ソニー株式会社 音声信号処理装置および音声信号処理方法
KR101283741B1 (ko) * 2004-10-28 2013-07-08 디티에스 워싱턴, 엘엘씨 N채널 오디오 시스템으로부터 m채널 오디오 시스템으로 변환하는 오디오 공간 환경 엔진 및 그 방법
EP1691348A1 (en) * 2005-02-14 2006-08-16 Ecole Polytechnique Federale De Lausanne Parametric joint-coding of audio sources
WO2006132857A2 (en) * 2005-06-03 2006-12-14 Dolby Laboratories Licensing Corporation Apparatus and method for encoding audio signals with decoding instructions
US20070055510A1 (en) * 2005-07-19 2007-03-08 Johannes Hilpert Concept for bridging the gap between parametric multi-channel audio coding and matrixed-surround multi-channel coding
JP4602204B2 (ja) 2005-08-31 2010-12-22 ソニー株式会社 音声信号処理装置および音声信号処理方法
JP4720405B2 (ja) * 2005-09-27 2011-07-13 船井電機株式会社 音声信号処理装置
JP4637725B2 (ja) 2005-11-11 2011-02-23 ソニー株式会社 音声信号処理装置、音声信号処理方法、プログラム
US7760886B2 (en) 2005-12-20 2010-07-20 Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forscheng e.V. Apparatus and method for synthesizing three output channels using two input channels
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
JP4835298B2 (ja) * 2006-07-21 2011-12-14 ソニー株式会社 オーディオ信号処理装置、オーディオ信号処理方法およびプログラム
JP4894386B2 (ja) 2006-07-21 2012-03-14 ソニー株式会社 音声信号処理装置、音声信号処理方法および音声信号処理プログラム
TWI424755B (zh) * 2008-01-11 2014-01-21 Dolby Lab Licensing Corp 矩陣解碼器
US8315396B2 (en) * 2008-07-17 2012-11-20 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating audio output signals using object based metadata
TWI449442B (zh) 2009-01-14 2014-08-11 Dolby Lab Licensing Corp 用於無回授之頻域主動矩陣解碼的方法與系統
US8718290B2 (en) 2010-01-26 2014-05-06 Audience, Inc. Adaptive noise reduction using level cues
US8473287B2 (en) 2010-04-19 2013-06-25 Audience, Inc. Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
JP5556673B2 (ja) * 2011-01-11 2014-07-23 株式会社Ｊｖｃケンウッド 音声信号補正装置、音声信号補正方法及びプログラム
JP5248718B1 (ja) 2011-12-19 2013-07-31 パナソニック株式会社 音分離装置、および音分離方法
US8737188B1 (en) 2012-01-11 2014-05-27 Audience, Inc. Crosstalk cancellation systems and methods
US9640194B1 (en) 2012-10-04 2017-05-02 Knowles Electronics, Llc Noise suppression for speech processing based on machine-learning mask estimation
US9215545B2 (en) * 2013-05-31 2015-12-15 Bose Corporation Sound stage controller for a near-field speaker-based audio system
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
WO2016033364A1 (en) 2014-08-28 2016-03-03 Audience, Inc. Multi-sourced noise suppression

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589129A (en) * 1984-02-21 1986-05-13 Kintek, Inc. Signal decoding system
ES2121783T3 (es) * 1990-06-08 1998-12-16 Harman Int Ind Procesador acustico de ambiente.
US5504819A (en) * 1990-06-08 1996-04-02 Harman International Industries, Inc. Surround sound processor with improved control voltage generator
US6198826B1 (en) * 1997-05-19 2001-03-06 Qsound Labs, Inc. Qsound surround synthesis from stereo

Also Published As

Publication number Publication date
DK1234484T3 (da) 2004-11-22
CN1226901C (zh) 2005-11-09
AU784855B2 (en) 2006-07-06
BR0015969A (pt) 2002-07-16
WO2001041504A1 (en) 2001-06-07
TW510143B (en) 2002-11-11
CN1391782A (zh) 2003-01-15
DE60012568D1 (de) 2004-09-02
ES2220572T3 (es) 2004-12-16
ATE272303T1 (de) 2004-08-15
DE60012568T2 (de) 2005-08-04
EP1234484B1 (en) 2004-07-28
AU1804301A (en) 2001-06-12
TR200402241T4 (tr) 2004-10-21
JP4540285B2 (ja) 2010-09-08
CA2392601A1 (en) 2001-06-07
EP1234484A1 (en) 2002-08-28
JP2003516069A (ja) 2003-05-07
MXPA02005521A (es) 2002-10-23
BRPI0015969B1 (pt) 2015-06-02
HK1051621A1 (en) 2003-08-08

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