ES2102685T3 - Rematrizado adaptativo de señales de audio matrizadas. - Google Patents

Rematrizado adaptativo de señales de audio matrizadas.

Info

Publication number
ES2102685T3
ES2102685T3 ES93923341T ES93923341T ES2102685T3 ES 2102685 T3 ES2102685 T3 ES 2102685T3 ES 93923341 T ES93923341 T ES 93923341T ES 93923341 T ES93923341 T ES 93923341T ES 2102685 T3 ES2102685 T3 ES 2102685T3
Authority
ES
Spain
Prior art keywords
signals
rematrix
matrix
encoder
decoder
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
ES93923341T
Other languages
English (en)
Inventor
Mark Franklin Davis
Stephen Decker Vernon
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
Original Assignee
Dolby Laboratories 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25502341&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2102685(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Application granted granted Critical
Publication of ES2102685T3 publication Critical patent/ES2102685T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

  • 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereophonic System (AREA)

Abstract

EN UN SISTEMA EN EL QUE UN CODIFICADOR DE BAJA VELOCIDAD DE TRAFICO BINARIO Y UN DECODIFICADOR QUE LLEVA SEÑALES DE AUDIO COMBINADAS MATRICIALMENTE, UN RECOMBINADOR MATRICIAL ADAPTABLE QUE RECOMBINA MATRICIALMENTE LAS SEÑALES COMBINADAS MATRICIALMENTE A PARTIR DE UN CODIFICADOR MATRICIAL 4:2 NO MODIFICADO PARA SEPARAR Y AISLAR LOS COMPONENTES SILENCIOSOS DE LOS RUIDOSOS, CON LO QUE SE EVITA LA CORRUPCION DE LAS SEÑALES SILENCIOSAS CON EL RUIDO DE CUANTIFICACION DE LA CODIFICACION A BAJA VELOCIDAD DE TRAFICO BINARIO DE LAS SEÑALES SONORAS. EL DECODIFICADOR TIENE TAMBIEN UN RECOMBINADOR MATRICIAL QUE RASTREA EL RECOMBINADOR MATRICIAL DEL CODIFICADOR Y RESTAURA LAS SEÑALES A LA FORMA REQUERIDA POR EL DECODIFICADOR MATRICIAL 2:4 NO MODIFICADO. EL RECOMBINADOR MATRICIAL ADAPTABLE DEL CODIFICADOR SELECCIONA LAS SEÑALES DE SALIDA MATRICIALES O LA SUMA Y DIFERENCIA PONDERADAS DE LA AMPLITUD DE LAS SEÑALES DE SALIDA MATRICIALES. LA ELECCION DE SI SE SELECCIONAN LAS SEÑALES DE SALIDA MATRICIALES O LASUMA Y DIFERENCIA DE LAS SEÑALES DE SALIDA MATRICIALES SE REALIZA EN BASE A UNA DETERMINACION DE LA QUE RESULTA UN MENOR NUMERO DE ARTEFACTOS NO DESEADOS CUANDO LAS SEÑALES DE AUDIO DE SALIDA SON RECUPERADAS EN EL DECODIFICADOR. EL RECOMBINADOR MATRICIAL ADAPTABLE PUEDE FUNCIONAR EN REPRESENTACIONES DE SEÑALES DE COMPONENTE FRECUENCIAL EN LUGAR DE EN LAS SEÑALES DE DOMINIO TEMPORAL MISMAS.
ES93923341T 1992-10-13 1993-10-08 Rematrizado adaptativo de señales de audio matrizadas. Expired - Lifetime ES2102685T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/959,730 US5291557A (en) 1992-10-13 1992-10-13 Adaptive rematrixing of matrixed audio signals

Publications (1)

Publication Number Publication Date
ES2102685T3 true ES2102685T3 (es) 1997-08-01

Family

ID=25502341

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93923341T Expired - Lifetime ES2102685T3 (es) 1992-10-13 1993-10-08 Rematrizado adaptativo de señales de audio matrizadas.

Country Status (12)

Country Link
US (1) US5291557A (es)
EP (1) EP0664943B1 (es)
JP (1) JP3421343B2 (es)
KR (1) KR100285993B1 (es)
AT (1) ATE154487T1 (es)
AU (1) AU674357B2 (es)
CA (1) CA2142092C (es)
DE (1) DE69311569T2 (es)
DK (1) DK0664943T3 (es)
ES (1) ES2102685T3 (es)
SG (1) SG82553A1 (es)
WO (1) WO1994009608A1 (es)

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US5463424A (en) * 1993-08-03 1995-10-31 Dolby Laboratories Licensing Corporation Multi-channel transmitter/receiver system providing matrix-decoding compatible signals
DE4409368A1 (de) * 1994-03-18 1995-09-21 Fraunhofer Ges Forschung Verfahren zum Codieren mehrerer Audiosignale
US7630500B1 (en) * 1994-04-15 2009-12-08 Bose Corporation Spatial disassembly processor
AU704693B2 (en) * 1994-12-20 1999-04-29 Dolby Laboratories Licensing Corporation Method and apparatus for applying waveform prediction to subbands of a perceptual coding system
US5625745A (en) * 1995-01-31 1997-04-29 Lucent Technologies Inc. Noise imaging protection for multi-channel audio signals
US5910995A (en) * 1995-11-22 1999-06-08 Sony Corporation Of Japan DSP decoder for decoding analog SR encoded audio signals
US5907623A (en) 1995-11-22 1999-05-25 Sony Corporation Of Japan Audio noise reduction system implemented through digital signal processing
US5749073A (en) * 1996-03-15 1998-05-05 Interval Research Corporation System for automatically morphing audio information
JP4478220B2 (ja) 1997-05-29 2010-06-09 ソニー株式会社 音場補正回路
KR100335611B1 (ko) * 1997-11-20 2002-10-09 삼성전자 주식회사 비트율 조절이 가능한 스테레오 오디오 부호화/복호화 방법 및 장치
US6252905B1 (en) 1998-02-05 2001-06-26 International Business Machines Corporation Real-time evaluation of compressed picture quality within a digital video encoder
US6624873B1 (en) 1998-05-05 2003-09-23 Dolby Laboratories Licensing Corporation Matrix-encoded surround-sound channels in a discrete digital sound format
KR20020028224A (ko) * 2000-07-05 2002-04-16 요트.게.아. 롤페즈 선 스펙트럼 주파수를 선형 예측 계수로 다시 변환하는 방법
JP2002175097A (ja) * 2000-12-06 2002-06-21 Yamaha Corp 音声信号のエンコード／圧縮装置およびデコード／伸長装置
TW510144B (en) * 2000-12-27 2002-11-11 C Media Electronics Inc Method and structure to output four-channel analog signal using two channel audio hardware
US7454257B2 (en) * 2001-02-08 2008-11-18 Warner Music Group Apparatus and method for down converting multichannel programs to dual channel programs using a smart coefficient generator
US7668317B2 (en) * 2001-05-30 2010-02-23 Sony Corporation Audio post processing in DVD, DTV and other audio visual products
EP1500085B1 (en) * 2002-04-10 2013-02-20 Koninklijke Philips Electronics N.V. Coding of stereo signals
US7428440B2 (en) * 2002-04-23 2008-09-23 Realnetworks, Inc. Method and apparatus for preserving matrix surround information in encoded audio/video
WO2003092260A2 (en) * 2002-04-23 2003-11-06 Realnetworks, Inc. Method and apparatus for preserving matrix surround information in encoded audio/video
US7318027B2 (en) 2003-02-06 2008-01-08 Dolby Laboratories Licensing Corporation Conversion of synthesized spectral components for encoding and low-complexity transcoding
US7542815B1 (en) * 2003-09-04 2009-06-02 Akita Blue, Inc. Extraction of left/center/right information from two-channel stereo sources
SE0400998D0 (sv) * 2004-04-16 2004-04-16 Cooding Technologies Sweden Ab Method for representing multi-channel audio signals
US7490044B2 (en) 2004-06-08 2009-02-10 Bose Corporation Audio signal processing
US7787631B2 (en) * 2004-11-30 2010-08-31 Agere Systems Inc. Parametric coding of spatial audio with cues based on transmitted channels
KR100682904B1 (ko) * 2004-12-01 2007-02-15 삼성전자주식회사 공간 정보를 이용한 다채널 오디오 신호 처리 장치 및 방법
EP1927102A2 (en) * 2005-06-03 2008-06-04 Dolby Laboratories Licensing Corporation Apparatus and method for encoding audio signals with decoding instructions
FR2895617A1 (fr) * 2005-12-26 2007-06-29 Jacques Gerald Foin Systeme d'appel detenus audio gere par micro automates sur reseau lon et matrice audio. exploitation en alternat audio par haut parleurs reversibles commutes par les micros automates
ATE448638T1 (de) 2006-04-13 2009-11-15 Fraunhofer Ges Forschung Audiosignaldekorrelator
EP2374211B1 (en) 2008-12-24 2012-04-04 Dolby Laboratories Licensing Corporation Audio signal loudness determination and modification in the frequency domain
US11657788B2 (en) 2009-05-27 2023-05-23 Dolby International Ab Efficient combined harmonic transposition
TWI591625B (zh) 2009-05-27 2017-07-11 杜比國際公司 從訊號的低頻成份產生該訊號之高頻成份的系統與方法，及其機上盒、電腦程式產品、軟體程式及儲存媒體
US9078077B2 (en) 2010-10-21 2015-07-07 Bose Corporation Estimation of synthetic audio prototypes with frequency-based input signal decomposition
WO2013160729A1 (en) * 2012-04-26 2013-10-31 Nokia Corporation Backwards compatible audio representation
US9338573B2 (en) 2013-07-30 2016-05-10 Dts, Inc. Matrix decoder with constant-power pairwise panning
ES2772851T3 (es) 2013-11-27 2020-07-08 Dts Inc Mezcla de matriz basada en multipletes para audio de múltiples canales de alta cantidad de canales
CN116806000B (zh) * 2023-08-18 2024-01-30 广东保伦电子股份有限公司 一种多通道任意扩展的分布式音频矩阵

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GB1514162A (en) * 1974-03-25 1978-06-14 Ruggles W Directional enhancement system for quadraphonic decoders
GB1526195A (en) * 1975-11-07 1978-09-27 British Broadcasting Corp Transmission or recording of quadraphonic signals
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
US5109417A (en) * 1989-01-27 1992-04-28 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
BR9007062A (pt) * 1989-01-27 1991-10-08 Dolby Lab Licensing Corp Codificador,descodificador e codificador/descodificador de transformada de retardo de tempo baixo para audio de alta qualidade
GB9103207D0 (en) * 1991-02-15 1991-04-03 Gerzon Michael A Stereophonic sound reproduction system

Also Published As

Publication number Publication date
US5291557A (en) 1994-03-01
EP0664943B1 (en) 1997-06-11
AU5326694A (en) 1994-05-09
KR950703266A (ko) 1995-08-23
KR100285993B1 (ko) 2001-04-16
DE69311569D1 (de) 1997-07-17
WO1994009608A1 (en) 1994-04-28
AU674357B2 (en) 1996-12-19
JPH08502157A (ja) 1996-03-05
SG82553A1 (en) 2001-08-21
CA2142092A1 (en) 1994-04-28
JP3421343B2 (ja) 2003-06-30
CA2142092C (en) 2004-09-21
DK0664943T3 (da) 1997-12-29
ATE154487T1 (de) 1997-06-15
DE69311569T2 (de) 1997-11-13
EP0664943A1 (en) 1995-08-02

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