ATE272303T1 - METHOD FOR DERIVING AT LEAST THREE AUDIO SIGNALS FROM TWO AUDIO SIGNALS - Google Patents

METHOD FOR DERIVING AT LEAST THREE AUDIO SIGNALS FROM TWO AUDIO SIGNALS

Info

Publication number
ATE272303T1
ATE272303T1 AT00980830T AT00980830T ATE272303T1 AT E272303 T1 ATE272303 T1 AT E272303T1 AT 00980830 T AT00980830 T AT 00980830T AT 00980830 T AT00980830 T AT 00980830T AT E272303 T1 ATE272303 T1 AT E272303T1
Authority
AT
Austria
Prior art keywords
signals
matrix
feedback
pair
control system
Prior art date
Application number
AT00980830T
Other languages
German (de)
Inventor
James W Fosgate
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
Priority claimed from US09/532,711 external-priority patent/US6920223B1/en
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Application granted granted Critical
Publication of ATE272303T1 publication Critical patent/ATE272303T1/en

Links

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

Abstract

Various equivalent adaptive audio matrix arrangements are disclosed, each of which includes a feedback-derived control system that automatically causes the cancellation of undesired matrix crosstalk components in the matrix output. Each adaptive audio matrix arrangement includes a passive matrix that produces a pair of passive matrix signals in response to two input signals. A feedback-derived control system operates on each pair of passive matrix signals, urging the magnitudes of pairs of intermediate signals toward equality. Each control system includes variable gain elements and a feedback and comparison arrangement generating a pair of control signals for controlling the variable gain elements. Additional control signals may be derived from the two pairs of control signals for use in obtaining more than four output signals from the adaptive matrix.
AT00980830T 1999-12-03 2000-11-28 METHOD FOR DERIVING AT LEAST THREE AUDIO SIGNALS FROM TWO AUDIO SIGNALS ATE272303T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US45481099A 1999-12-03 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
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 (1)

Publication Number Publication Date
ATE272303T1 true ATE272303T1 (en) 2004-08-15

Family

ID=27037614

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00980830T ATE272303T1 (en) 1999-12-03 2000-11-28 METHOD FOR DERIVING AT LEAST THREE AUDIO SIGNALS FROM TWO AUDIO SIGNALS

Country Status (15)

Country Link
EP (1) EP1234484B1 (en)
JP (1) JP4540285B2 (en)
CN (1) CN1226901C (en)
AT (1) ATE272303T1 (en)
AU (1) AU784855B2 (en)
BR (1) BRPI0015969B1 (en)
CA (1) CA2392601C (en)
DE (1) DE60012568T2 (en)
DK (1) DK1234484T3 (en)
ES (1) ES2220572T3 (en)
HK (1) HK1051621A1 (en)
MX (1) MXPA02005521A (en)
TR (1) TR200402241T4 (en)
TW (1) TW510143B (en)
WO (1) WO2001041504A1 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0113615B1 (en) 2000-08-31 2015-11-24 Dolby Lab Licensing Corp method for audio matrix decoding apparatus
US7003467B1 (en) 2000-10-06 2006-02-21 Digital Theater Systems, Inc. Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio
JP4867914B2 (en) 2004-03-01 2012-02-01 ドルビー ラボラトリーズ ライセンシング コーポレイション Multi-channel audio coding
SE0400997D0 (en) * 2004-04-16 2004-04-16 Cooding Technologies Sweden Ab Efficient coding or multi-channel audio
KR100725818B1 (en) 2004-07-14 2007-06-11 삼성전자주식회사 Sound reproducing apparatus and method for providing virtual sound source
JP4580210B2 (en) 2004-10-19 2010-11-10 ソニー株式会社 Audio signal processing apparatus and audio signal processing method
CN102117617B (en) * 2004-10-28 2013-01-30 Dts（英属维尔京群岛）有限公司 Audio spatial environment engine
EP1691348A1 (en) * 2005-02-14 2006-08-16 Ecole Polytechnique Federale De Lausanne Parametric joint-coding of audio sources
BRPI0611505A2 (en) * 2005-06-03 2010-09-08 Dolby Lab Licensing Corp channel reconfiguration with secondary information
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 (en) 2005-08-31 2010-12-22 ソニー株式会社 Audio signal processing apparatus and audio signal processing method
JP4720405B2 (en) * 2005-09-27 2011-07-13 船井電機株式会社 Audio signal processing device
JP4637725B2 (en) 2005-11-11 2011-02-23 ソニー株式会社 Audio signal processing apparatus, audio signal processing method, and program
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 (en) 2006-07-21 2011-12-14 ソニー株式会社 Audio signal processing apparatus, audio signal processing method and program
JP4894386B2 (en) 2006-07-21 2012-03-14 ソニー株式会社 Audio signal processing apparatus, audio signal processing method, and audio signal processing program
TWI424755B (en) * 2008-01-11 2014-01-21 Dolby Lab Licensing Corp Matrix decoder
EP2146522A1 (en) * 2008-07-17 2010-01-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating audio output signals using object based metadata
TWI449442B (en) 2009-01-14 2014-08-11 Dolby Lab Licensing Corp Method and system for frequency domain active matrix decoding without feedback
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 (en) * 2011-01-11 2014-07-23 株式会社Ｊｖｃケンウッド Audio signal correction apparatus, audio signal correction method and program
JP5248718B1 (en) 2011-12-19 2013-07-31 パナソニック株式会社 Sound separation device and sound separation method
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
US5504819A (en) * 1990-06-08 1996-04-02 Harman International Industries, Inc. Surround sound processor with improved control voltage generator
DE69130169T2 (en) * 1990-06-08 1999-04-15 Harman Int Ind ROOM SOUND PROCESSOR
US6198826B1 (en) * 1997-05-19 2001-03-06 Qsound Labs, Inc. Qsound surround synthesis from stereo

Also Published As

Publication number Publication date
TW510143B (en) 2002-11-11
CA2392601A1 (en) 2001-06-07
DE60012568T2 (en) 2005-08-04
MXPA02005521A (en) 2002-10-23
ES2220572T3 (en) 2004-12-16
EP1234484A1 (en) 2002-08-28
EP1234484B1 (en) 2004-07-28
HK1051621A1 (en) 2003-08-08
AU784855B2 (en) 2006-07-06
CN1391782A (en) 2003-01-15
CN1226901C (en) 2005-11-09
JP4540285B2 (en) 2010-09-08
AU1804301A (en) 2001-06-12
DK1234484T3 (en) 2004-11-22
JP2003516069A (en) 2003-05-07
DE60012568D1 (en) 2004-09-02
BRPI0015969B1 (en) 2015-06-02
WO2001041504A1 (en) 2001-06-07
BR0015969A (en) 2002-07-16
TR200402241T4 (en) 2004-10-21
CA2392601C (en) 2012-07-17

Similar Documents

Publication Publication Date Title
ATE272303T1 (en) METHOD FOR DERIVING AT LEAST THREE AUDIO SIGNALS FROM TWO AUDIO SIGNALS
MY127999A (en) Method for deriving at least three audio signals from two input audio signals
WO2004054145A3 (en) Signal distribution system cascadable agc device and method
AU7123100A (en) Audio signal processing
CA2273151A1 (en) Efficient parallel-stage power amplifier
BR0113615A (en) Method for apparatus for decoding audio matrix
WO1998021683A3 (en) System and method for protecting a computer and a network from hostile downloadables
EP1102393A3 (en) System and method for producing an amplified signal
DE60029436T2 (en) Acoustic echo canceler
CA2136365A1 (en) Background Noise Compensation in a Telephone Set
DE3607610A1 (en) DECODER
HK1025848A1 (en) Acoustic feedback elimination using adaptive notch filter algorithm
DE69636184T2 (en) Stereophonic device for sound field extension
DE69113844D1 (en) Low noise amplifier with high input impedance, especially for microphones.
ATE301384T1 (en) METHOD AND ARRANGEMENT FOR DERIVING AT LEAST ONE AUDIO SIGNAL FROM TWO OR MORE AUDIO SIGNALS
DE102019123971B4 (en) ACTIVE NOISE COMPENSATION SYSTEM AND METHOD
AU2003278467A1 (en) Transform-domain sample-by-sample decision feedback equalizer
EP1020068B1 (en) Echo compensation method, echo compensation device and telecommunication device
DE10194353D2 (en) Voice-guided device control with one user optimization
DE3910879A1 (en) Door station of a domestic telephone system equipped with voice control
WO2000072564A2 (en) Echo compensation device
CH625657A5 (en) Method for voice control in a door intercom system and an arrangement to carry it out
Schrauwen Macro and Micro Reform
DE4118428A1 (en) Method and device for suppressing an interference signal, in particular for suppressing an electronic radio defense interference signal
DD269050A1 (en) PAINTING SYSTEM AND METHOD FOR MEASURING THEM

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 1234484

Country of ref document: EP