BR0015969A - Método para derivar pelo menos três sinais de áudio de dois sinais de áudio de entrada - Google Patents

Método para derivar pelo menos três sinais de áudio de dois sinais de áudio de entrada

Info

Publication number
BR0015969A
BR0015969A BR0015969-7A BR0015969A BR0015969A BR 0015969 A BR0015969 A BR 0015969A BR 0015969 A BR0015969 A BR 0015969A BR 0015969 A BR0015969 A BR 0015969A
Authority
BR
Brazil
Prior art keywords
signals
matrix
audio signals
feedback
pair
Prior art date
Application number
BR0015969-7A
Other languages
English (en)
Other versions
BRPI0015969B1 (pt
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
Publication of BR0015969A publication Critical patent/BR0015969A/pt
Publication of BRPI0015969B1 publication Critical patent/BRPI0015969B1/pt

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

Landscapes

  • 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)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

"MéTODO PARA DERIVAR PELO MENOS TRêS SINAIS DE áUDIO DE DOIS SINAIS DE áUDIO DE ENTRADA". Várias disposições de matrizes de áudio adaptativas são descritas, cada uma das quais inclui um sistema de controle derivado de realimentação, que provoca, automaticamente, o cancelamento de componentes de diafonia da matriz indesejado na saida da matriz. Cada disposição de matriz de áudio adaptativa inclui uma matriz passiva, que produz um par de sinais de matriz passiva em resposta a dois sinais de entrada. Um sistema de controle derivado de realimentação opera em cada par de sinais da matriz passiva, impulsionando as grandezas dos pares dos sinais intermediários no sentido da igualdade. Cada sistema de controle inclui elementos de ganho variável e uma disposição de realimentação e comparação gerando um par de sinais de controle, para controlar os elementos de ganho variável. Os sinais de controle adicionais podem ser derivados dos dois pares de sinais de controle, para uso na obtenção de mais do que quatro sinais de saída da matriz adaptativa.
BRPI0015969-7A 1999-12-03 2000-11-28 Método para derivar pelo menos três sinais de áudio de dois sinais de áudio de entrada BRPI0015969B1 (pt)

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 (2)

Publication Number Publication Date
BR0015969A true BR0015969A (pt) 2002-07-16
BRPI0015969B1 BRPI0015969B1 (pt) 2015-06-02

Family

ID=27037614

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0015969-7A BRPI0015969B1 (pt) 1999-12-03 2000-11-28 Método para derivar pelo menos três sinais de áudio de dois sinais de áudio de entrada

Country Status (15)

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

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002019768A2 (en) 2000-08-31 2002-03-07 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
ATE430360T1 (de) 2004-03-01 2009-05-15 Dolby Lab Licensing Corp Mehrkanalige audiodekodierung
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
US20070297519A1 (en) * 2004-10-28 2007-12-27 Jeffrey Thompson Audio Spatial Environment Engine
EP1691348A1 (en) * 2005-02-14 2006-08-16 Ecole Polytechnique Federale De Lausanne Parametric joint-coding of audio sources
MX2007015118A (es) * 2005-06-03 2008-02-14 Dolby Lab Licensing Corp Aparato y metodo para codificacion de senales de audio con instrucciones de decodificacion.
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
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
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
US9799330B2 (en) 2014-08-28 2017-10-24 Knowles Electronics, Llc 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
JP3382249B2 (ja) * 1990-06-08 2003-03-04 ハーマン・インターナショナル・インダストリーズ・インコーポレーテッド サラウンド・プロセッサ
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
JP2003516069A (ja) 2003-05-07
CA2392601C (en) 2012-07-17
EP1234484A1 (en) 2002-08-28
EP1234484B1 (en) 2004-07-28
WO2001041504A1 (en) 2001-06-07
BRPI0015969B1 (pt) 2015-06-02
TW510143B (en) 2002-11-11
MXPA02005521A (es) 2002-10-23
CN1391782A (zh) 2003-01-15
CN1226901C (zh) 2005-11-09
ATE272303T1 (de) 2004-08-15
AU784855B2 (en) 2006-07-06
ES2220572T3 (es) 2004-12-16
CA2392601A1 (en) 2001-06-07
HK1051621A1 (en) 2003-08-08
JP4540285B2 (ja) 2010-09-08
TR200402241T4 (tr) 2004-10-21
DE60012568D1 (de) 2004-09-02
DK1234484T3 (da) 2004-11-22
DE60012568T2 (de) 2005-08-04
AU1804301A (en) 2001-06-12

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 02/06/2015, OBSERVADAS AS CONDICOES LEGAIS.