BR9812432A - 5-2-5 matrix encoder and decoder system - Google Patents

5-2-5 matrix encoder and decoder system

Info

Publication number
BR9812432A
BR9812432A BR9812432-3A BR9812432A BR9812432A BR 9812432 A BR9812432 A BR 9812432A BR 9812432 A BR9812432 A BR 9812432A BR 9812432 A BR9812432 A BR 9812432A
Authority
BR
Brazil
Prior art keywords
channels
input
component
output
directionally
Prior art date
Application number
BR9812432-3A
Other languages
Portuguese (pt)
Inventor
David H Griesinger
Original Assignee
Lexicon
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
Application filed by Lexicon filed Critical Lexicon
Priority claimed from PCT/US1998/018390 external-priority patent/WO1999012386A1/en
Publication of BR9812432A publication Critical patent/BR9812432A/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

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)
  • Stereophonic System (AREA)

Abstract

Patente de Invenção: <B>"SISTEMA CODIFICADOR E DECODIFICADOR DE MATRIZ 5-2-5"<D>. Sistema de reprodução de som para converter sinais estéreos em dois canais de entrada (92, 94), pelo menos um componente de sinal sendo codificado direcionalmente e correlacionado e pelo menos um componente de sinal que é codificado não-direcionalmente e não-correlacionado nos dois canais de entrada, em sinal para diversos canais de saída, incluindo aparelho de decodificação (90) para otimizar o componente correlacionado dos sinais de entrada na direção desejada e reduzindo a resistência desses sinais em canais não associados com a direção codificada, enquanto preserva a separação entre os respectivos canais de saída esquerdo e direito (172, 176) e a energia total do componente não-correlacionado dos canais de entrada em cada canal de saída, de modo que os instrumentos gravados no canal de entrada direito permanece no lado direito dos canais de saída e os instrumentos gravados à esquerda permanecem no lado esquerdo e a sonoridade aparente de todos os instrumentos nos canais de saída permanece a mesma independente da direção do componente codificado direcionalmente dos sinais de entrada e dispositivo de codificação para codificar cinco canais de entrada de modo que eles codificarão com direção e níveis corretos nos decodificadores de acordo com a invenção e nos decodificadores de acordo com o padrão de filmes corrente.Invention Patent: <B> "MATRIX CODING AND DECODING SYSTEM 5-2-5" <D>. Sound reproduction system for converting stereo signals to two input channels (92, 94), at least one signal component being encoded directionally and correlated and at least one signal component that is encoded non-directionally and uncorrelated in the two input channels, in signal for several output channels, including decoding apparatus (90) to optimize the correlated component of the input signals in the desired direction and reducing the resistance of these signals in channels not associated with the coded direction, while preserving the separation between the respective left and right output channels (172, 176) and the total energy of the uncorrelated component of the input channels in each output channel, so that the instruments recorded in the right input channel remain on the right side of the channels output and the instruments recorded on the left remain on the left side and the apparent loudness of all instruments the output channels remain the same regardless of the direction of the directionally encoded component of the input signals and encoding device to encode five input channels so that they will encode with correct direction and levels in the decoders according to the invention and in the decoders according to with the current film standard.

BR9812432-3A 1997-09-05 1998-09-03 5-2-5 matrix encoder and decoder system BR9812432A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5816997P 1997-09-05 1997-09-05
PCT/US1998/018390 WO1999012386A1 (en) 1997-09-05 1998-09-03 5-2-5 matrix encoder and decoder system

Publications (1)

Publication Number Publication Date
BR9812432A true BR9812432A (en) 2000-09-19

Family

ID=22015126

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9812432-3A BR9812432A (en) 1997-09-05 1998-09-03 5-2-5 matrix encoder and decoder system

Country Status (5)

Country Link
JP (1) JP2010178375A (en)
KR (1) KR100454012B1 (en)
CN (1) CN1691841B (en)
BR (1) BR9812432A (en)
CA (1) CA2301547C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8693697B2 (en) * 2011-06-06 2014-04-08 Reality Ip Pty Ltd Matrix encoder with improved channel separation
CN102802111B (en) * 2012-07-19 2017-06-09 新奥特（北京）视频技术有限公司 A kind of method and system for exporting surround sound
EP2879131A1 (en) 2013-11-27 2015-06-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Decoder, encoder and method for informed loudness estimation in object-based audio coding systems
CN109327769B (en) * 2018-08-24 2021-06-04 重庆清文科技有限公司 Vehicle-mounted seat exclusive sound equipment
JP7451896B2 (en) * 2019-07-16 2024-03-19 ヤマハ株式会社 Sound processing device and sound processing method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172415A (en) * 1990-06-08 1992-12-15 Fosgate James W Surround processor
KR920002931A (en) * 1990-07-31 1992-02-28 강진구 Lubrication control device of hermetic scull compressor
JP2982627B2 (en) * 1993-07-30 1999-11-29 日本ビクター株式会社 Surround signal processing device and video / audio reproduction device
CN1045360C (en) * 1994-08-23 1999-09-29 陈运凤 Video matrix stereo audio recording and playing system
US5638452A (en) * 1995-04-21 1997-06-10 Rocktron Corporation Expandable multi-dimensional sound circuit
US5796844A (en) * 1996-07-19 1998-08-18 Lexicon Multichannel active matrix sound reproduction with maximum lateral separation

Also Published As

Publication number Publication date
JP2010178375A (en) 2010-08-12
CN1691841A (en) 2005-11-02
KR100454012B1 (en) 2004-10-26
CA2301547C (en) 2006-06-06
CN1691841B (en) 2010-09-29
KR20010023723A (en) 2001-03-26
CA2301547A1 (en) 1999-03-11

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Legal Events

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B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 10A, 11A E 12A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2069 DE 31/08/2010.