CN1250046C - 由两路或更多路输入音频信号获得至少一路音频信号的方法和装置 - Google Patents

由两路或更多路输入音频信号获得至少一路音频信号的方法和装置 Download PDF

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Publication number
CN1250046C
CN1250046C CNB008165629A CN00816562A CN1250046C CN 1250046 C CN1250046 C CN 1250046C CN B008165629 A CNB008165629 A CN B008165629A CN 00816562 A CN00816562 A CN 00816562A CN 1250046 C CN1250046 C CN 1250046C
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China
Prior art keywords
signal
principal direction
audio signal
output
signals
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Expired - Fee Related
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CNB008165629A
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English (en)
Chinese (zh)
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CN1402957A (zh
Inventor
肯尼斯·J·古恩德里
詹姆斯·W·弗斯加特
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Dolby Laboratories Licensing Corp
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Dolby Laboratories Licensing Corp
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Priority claimed from US09/532,711 external-priority patent/US6920223B1/en
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Publication of CN1402957A publication Critical patent/CN1402957A/zh
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Publication of CN1250046C publication Critical patent/CN1250046C/zh
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    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Toys (AREA)
CNB008165629A 1999-12-03 2000-11-29 由两路或更多路输入音频信号获得至少一路音频信号的方法和装置 Expired - Fee Related CN1250046C (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US45481099A 1999-12-03 1999-12-03
US09/454,810 1999-12-03
US09/532,711 US6920223B1 (en) 1999-12-03 2000-03-22 Method for deriving at least three audio signals from two input audio signals
US09/532,711 2000-03-22
US09/602,585 US6970567B1 (en) 1999-12-03 2000-06-21 Method and apparatus for deriving at least one audio signal from two or more input audio signals
US09/602,585 2000-06-21

Publications (2)

Publication Number Publication Date
CN1402957A CN1402957A (zh) 2003-03-12
CN1250046C true CN1250046C (zh) 2006-04-05

Family

ID=27412620

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB008165629A Expired - Fee Related CN1250046C (zh) 1999-12-03 2000-11-29 由两路或更多路输入音频信号获得至少一路音频信号的方法和装置

Country Status (13)

Country Link
US (1) US6970567B1 (enExample)
EP (1) EP1234485B1 (enExample)
JP (1) JP2003515771A (enExample)
CN (1) CN1250046C (enExample)
AT (1) ATE301384T1 (enExample)
AU (1) AU784083B2 (enExample)
BR (1) BR0016741A (enExample)
CA (1) CA2392602A1 (enExample)
DE (1) DE60021756T2 (enExample)
HK (1) HK1054838B (enExample)
MX (1) MXPA02005520A (enExample)
TW (1) TW506227B (enExample)
WO (1) WO2001041505A1 (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2420671C (en) 2000-08-31 2011-12-13 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
CN1926607B (zh) 2004-03-01 2011-07-06 杜比实验室特许公司 多信道音频编码
ES2307160T3 (es) * 2004-04-05 2008-11-16 Koninklijke Philips Electronics N.V. Codificador multicanal.
JP4594681B2 (ja) * 2004-09-08 2010-12-08 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
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
US8111830B2 (en) * 2005-12-19 2012-02-07 Samsung Electronics Co., Ltd. Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
FR2916078A1 (fr) * 2007-05-10 2008-11-14 France Telecom Procede de codage et decodage audio, codeur audio, decodeur audio et programmes d'ordinateur associes
US8315398B2 (en) 2007-12-21 2012-11-20 Dts Llc System for adjusting perceived loudness of audio signals
TWI424755B (zh) * 2008-01-11 2014-01-21 Dolby Lab Licensing Corp 矩陣解碼器
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
US8538042B2 (en) 2009-08-11 2013-09-17 Dts Llc System for increasing perceived loudness of speakers
WO2013094135A1 (ja) 2011-12-19 2013-06-27 パナソニック株式会社 音分離装置、および音分離方法
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time

Family Cites Families (10)

* 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
US4799260A (en) 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
US5428687A (en) 1990-06-08 1995-06-27 James W. Fosgate Control voltage generator multiplier and one-shot for integrated surround sound processor
US5504819A (en) 1990-06-08 1996-04-02 Harman International Industries, Inc. Surround sound processor with improved control voltage generator
US5295189A (en) 1990-06-08 1994-03-15 Fosgate James W Control voltage generator for surround sound processor
US5625696A (en) 1990-06-08 1997-04-29 Harman International Industries, Inc. Six-axis surround sound processor with improved matrix and cancellation control
US5172415A (en) 1990-06-08 1992-12-15 Fosgate James W Surround processor
JP3472046B2 (ja) 1996-08-23 2003-12-02 株式会社国際電気通信基礎技術研究所 信号分離装置
US5862228A (en) 1997-02-21 1999-01-19 Dolby Laboratories Licensing Corporation Audio matrix encoding
US6198826B1 (en) 1997-05-19 2001-03-06 Qsound Labs, Inc. Qsound surround synthesis from stereo

Also Published As

Publication number Publication date
MXPA02005520A (es) 2002-10-23
HK1054838A1 (en) 2003-12-12
TW506227B (en) 2002-10-11
ATE301384T1 (de) 2005-08-15
DE60021756T2 (de) 2006-04-20
DE60021756D1 (de) 2005-09-08
EP1234485B1 (en) 2005-08-03
CA2392602A1 (en) 2001-06-07
AU2051801A (en) 2001-06-12
EP1234485A1 (en) 2002-08-28
CN1402957A (zh) 2003-03-12
JP2003515771A (ja) 2003-05-07
AU784083B2 (en) 2006-02-02
WO2001041505A1 (en) 2001-06-07
BR0016741A (pt) 2002-09-03
US6970567B1 (en) 2005-11-29
HK1054838B (zh) 2006-09-08

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