GB1402320A - Decoder for use in 4-2-4 matrix playback system - Google Patents

Decoder for use in 4-2-4 matrix playback system

Info

Publication number
GB1402320A
GB1402320A GB4793072A GB4793072A GB1402320A GB 1402320 A GB1402320 A GB 1402320A GB 4793072 A GB4793072 A GB 4793072A GB 4793072 A GB4793072 A GB 4793072A GB 1402320 A GB1402320 A GB 1402320A
Authority
GB
United Kingdom
Prior art keywords
signals
control
output
circuit
signal
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
Application number
GB4793072A
Other languages
English (en)
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.)
Sansui Electric Co Ltd
Original Assignee
Sansui Electric Co Ltd
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 JP46084484A external-priority patent/JPS5127363B2/ja
Priority claimed from JP46086521A external-priority patent/JPS5127364B2/ja
Priority claimed from JP46087832A external-priority patent/JPS5127366B2/ja
Priority claimed from JP46089678A external-priority patent/JPS5127367B2/ja
Priority claimed from JP722145A external-priority patent/JPS5213404B2/ja
Priority claimed from JP47029332A external-priority patent/JPS5249721B2/ja
Priority claimed from JP47038407A external-priority patent/JPS5249723B2/ja
Application filed by Sansui Electric Co Ltd filed Critical Sansui Electric Co Ltd
Publication of GB1402320A publication Critical patent/GB1402320A/en
Expired 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)
  • Stereophonic System (AREA)
GB4793072A 1971-10-25 1972-10-18 Decoder for use in 4-2-4 matrix playback system Expired GB1402320A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP46084484A JPS5127363B2 (enExample) 1971-10-25 1971-10-25
JP46086521A JPS5127364B2 (enExample) 1971-10-30 1971-10-30
JP46087832A JPS5127366B2 (enExample) 1971-11-04 1971-11-04
JP46089678A JPS5127367B2 (enExample) 1971-11-10 1971-11-10
JP722145A JPS5213404B2 (enExample) 1971-12-29 1971-12-29
JP47029332A JPS5249721B2 (enExample) 1972-03-23 1972-03-23
JP47038407A JPS5249723B2 (enExample) 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
GB1402320A true GB1402320A (en) 1975-08-06

Family

ID=27563172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4793072A Expired GB1402320A (en) 1971-10-25 1972-10-18 Decoder for use in 4-2-4 matrix playback system

Country Status (3)

Country Link
US (1) US3825684A (enExample)
GB (1) GB1402320A (enExample)
NL (1) NL159558B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2502618A (en) * 2012-06-01 2013-12-04 British Sky Broadcasting Ltd Surround Sound Speaker System with Wireless Rear Speakers

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967063A (en) * 1971-06-23 1976-06-29 Cbs Inc. Logic for matrix systems for reproducing quadraphonic sound
JPS5317283B2 (enExample) * 1973-03-07 1978-06-07
JPS5248001B2 (enExample) * 1973-08-20 1977-12-07
JPS5323161B2 (enExample) * 1973-08-27 1978-07-13
JPS5248002B2 (enExample) * 1973-09-18 1977-12-07
DE2445123C3 (de) * 1973-09-26 1980-03-06 Hitachi, Ltd. Analogsignal-Verarbeitungsschaltung
GB1514162A (en) * 1974-03-25 1978-06-14 Ruggles W Directional enhancement system for quadraphonic decoders
US3943287A (en) * 1974-06-03 1976-03-09 Cbs Inc. Apparatus and method for decoding four channel sound
US3937885A (en) * 1974-09-06 1976-02-10 Motorola, Inc. Control circuit for a matrixed four channel audio reproducing system
JPS5154401A (en) * 1974-11-07 1976-05-13 Sansui Electric Co Matorikusu 4 channeruyodekooda
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
US4862502A (en) * 1988-01-06 1989-08-29 Lexicon, Inc. Sound reproduction
US5172415A (en) * 1990-06-08 1992-12-15 Fosgate James W Surround processor
US5136650A (en) * 1991-01-09 1992-08-04 Lexicon, Inc. Sound reproduction
US5727068A (en) * 1996-03-01 1998-03-10 Cinema Group, Ltd. Matrix decoding method and apparatus
US5870480A (en) * 1996-07-19 1999-02-09 Lexicon Multichannel active matrix encoder and decoder with maximum lateral separation
US5796844A (en) * 1996-07-19 1998-08-18 Lexicon Multichannel active matrix sound reproduction with maximum lateral separation
TW576122B (en) 2000-08-31 2004-02-11 Dolby Lab Licensing Corp Method for apparatus for audio matrix decoding
US7283634B2 (en) * 2004-08-31 2007-10-16 Dts, Inc. Method of mixing audio channels using correlated outputs
WO2007004251A1 (ja) * 2005-06-30 2007-01-11 Fujitsu Limited Ｄｃ／ｄｃコンバータ及び，これを適用した電力増幅器
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
JP4479644B2 (ja) * 2005-11-02 2010-06-09 ソニー株式会社 信号処理装置および信号処理方法
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
JP4940671B2 (ja) * 2006-01-26 2012-05-30 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及びオーディオ信号処理プログラム
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
JP5082327B2 (ja) * 2006-08-09 2012-11-28 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
CN101502131B (zh) * 2006-08-10 2014-06-25 皇家飞利浦电子股份有限公司 处理音频信号的装置和方法
US8693697B2 (en) * 2011-06-06 2014-04-08 Reality Ip Pty Ltd Matrix encoder with improved channel separation
AU2015275309B2 (en) * 2011-06-06 2017-10-12 Reality Ip Pty Ltd Matrix encoder with improved channel separation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213082B1 (enExample) * 1971-07-19 1977-04-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2502618A (en) * 2012-06-01 2013-12-04 British Sky Broadcasting Ltd Surround Sound Speaker System with Wireless Rear Speakers

Also Published As

Publication number Publication date
NL159558B (nl) 1979-02-15
US3825684A (en) 1974-07-23
NL7214354A (enExample) 1973-04-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee