JPS5236681B2 - - Google Patents

Info

Publication number
JPS5236681B2
JPS5236681B2 JP47120032A JP12003272A JPS5236681B2 JP S5236681 B2 JPS5236681 B2 JP S5236681B2 JP 47120032 A JP47120032 A JP 47120032A JP 12003272 A JP12003272 A JP 12003272A JP S5236681 B2 JPS5236681 B2 JP S5236681B2
Authority
JP
Japan
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
JP47120032A
Other versions
JPS4978502A (ja
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 filed Critical
Priority to JP47120032A priority Critical patent/JPS5236681B2/ja
Priority to US419527A priority patent/US3887770A/en
Priority to GB5508773A priority patent/GB1417873A/en
Priority to DE2359554A priority patent/DE2359554C3/de
Publication of JPS4978502A publication Critical patent/JPS4978502A/ja
Publication of JPS5236681B2 publication Critical patent/JPS5236681B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Multimedia (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Radar Systems Or Details Thereof (AREA)
JP47120032A 1972-11-30 1972-11-30 Expired JPS5236681B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP47120032A JPS5236681B2 (ja) 1972-11-30 1972-11-30
US419527A US3887770A (en) 1972-11-30 1973-11-28 Decoder apparatus adapted for different 4-channel matrix systems
GB5508773A GB1417873A (en) 1972-11-30 1973-11-28 Decoder apparatus adapted for different 4-channel matrix systems
DE2359554A DE2359554C3 (de) 1972-11-30 1973-11-29 Dekodiereinrichtung für zwei verschiedene Vierkanal-Matrixsysteme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47120032A JPS5236681B2 (ja) 1972-11-30 1972-11-30

Publications (2)

Publication Number Publication Date
JPS4978502A JPS4978502A (ja) 1974-07-29
JPS5236681B2 true JPS5236681B2 (ja) 1977-09-17

Family

ID=14776203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47120032A Expired JPS5236681B2 (ja) 1972-11-30 1972-11-30

Country Status (4)

Country Link
US (1) US3887770A (ja)
JP (1) JPS5236681B2 (ja)
DE (1) DE2359554C3 (ja)
GB (1) GB1417873A (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1494751A (en) * 1974-03-26 1977-12-14 Nat Res Dev Sound reproduction systems
JPS5145503A (en) * 1974-10-16 1976-04-19 Sansui Electric Co Matorikusu 4 channeruyodekooda
JPS5154401A (en) * 1974-11-07 1976-05-13 Sansui Electric Co Matorikusu 4 channeruyodekooda
GB1550627A (en) * 1975-11-13 1979-08-15 Nat Res Dev Sound reproduction systems
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
US4910778A (en) * 1987-10-16 1990-03-20 Barton Geoffrey J Signal enhancement processor for stereo system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783192A (en) * 1971-12-30 1974-01-01 Sansui Electric Co Decoder for use in matrix four-channel system
US3787192A (en) * 1972-03-02 1974-01-22 Mcdowell Wellman Eng Co Process for coal gasification

Also Published As

Publication number Publication date
DE2359554A1 (de) 1974-06-12
JPS4978502A (ja) 1974-07-29
DE2359554B2 (de) 1980-04-10
US3887770A (en) 1975-06-03
GB1417873A (en) 1975-12-17
DE2359554C3 (de) 1980-12-04

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