CA2301547A1 - 5-2-5 matrix encoder and decoder system - Google Patents

5-2-5 matrix encoder and decoder system Download PDF

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Publication number
CA2301547A1
CA2301547A1 CA002301547A CA2301547A CA2301547A1 CA 2301547 A1 CA2301547 A1 CA 2301547A1 CA 002301547 A CA002301547 A CA 002301547A CA 2301547 A CA2301547 A CA 2301547A CA 2301547 A1 CA2301547 A1 CA 2301547A1
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Canada
Prior art keywords
channels
input
signals
component
encoded
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.)
Granted
Application number
CA002301547A
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French (fr)
Other versions
CA2301547C (en
Inventor
David H. Griesinger
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.)
Harman International Industries Inc
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Individual
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Priority claimed from PCT/US1998/018390 external-priority patent/WO1999012386A1/en
Publication of CA2301547A1 publication Critical patent/CA2301547A1/en
Application granted granted Critical
Publication of CA2301547C publication Critical patent/CA2301547C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

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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)

Abstract

A sound reproduction system for converting stereo signals on two input channels (92, 94), at least one signal component being directionally encoded and correlated and at least one signal component that is not directionally encoded and uncorrelated in the two input channels, into signals for several ouput channels, including decoding apparatus (90) for enhancing the correlated component of the input signals in the desired direction and reducing the strength of such signals in channels not associated with the encoded direction, while preserving the separation between the respective left and right ouput channels (172, 176) and the total energy of the uncorrelated component of the input channels in each output channel, such that instruments recorded on the right input channel stay on the right side of the output channels and the instruments recorded on the left stay on the left side, and the apparent loudness of all the intruments in all the output channels stays the same regardless of the direction of the directionally encoded component of the input signals, and encoding means to encode five input channels so they will encode with correct direction and level in decoders according to the invention, and in decoders according to the current film standard.
CA002301547A 1997-09-05 1998-09-03 5-2-5 matrix encoder and decoder system Expired - Fee Related CA2301547C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5816997P 1997-09-05 1997-09-05
US60/058,169 1997-09-05
PCT/US1998/018390 WO1999012386A1 (en) 1997-09-05 1998-09-03 5-2-5 matrix encoder and decoder system

Publications (2)

Publication Number Publication Date
CA2301547A1 true CA2301547A1 (en) 1999-03-11
CA2301547C CA2301547C (en) 2006-06-06

Family

ID=22015126

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002301547A Expired - Fee Related CA2301547C (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111312266A (en) * 2013-11-27 2020-06-19 弗劳恩霍夫应用研究促进协会 Decoder and method, encoder and encoding method, system and computer program

Families Citing this family (4)

* 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
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111312266A (en) * 2013-11-27 2020-06-19 弗劳恩霍夫应用研究促进协会 Decoder and method, encoder and encoding method, system and computer program
CN111312266B (en) * 2013-11-27 2023-11-10 弗劳恩霍夫应用研究促进协会 Decoder and method, encoder and encoding method and system

Also Published As

Publication number Publication date
KR100454012B1 (en) 2004-10-26
CN1691841B (en) 2010-09-29
CN1691841A (en) 2005-11-02
KR20010023723A (en) 2001-03-26
BR9812432A (en) 2000-09-19
JP2010178375A (en) 2010-08-12
CA2301547C (en) 2006-06-06

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Effective date: 20180904