BE777215A - Decodeur pour systeme de reproduction quadriphonique - Google Patents

Decodeur pour systeme de reproduction quadriphonique

Info

Publication number
BE777215A
BE777215A BE777215A BE777215A BE777215A BE 777215 A BE777215 A BE 777215A BE 777215 A BE777215 A BE 777215A BE 777215 A BE777215 A BE 777215A BE 777215 A BE777215 A BE 777215A
Authority
BE
Belgium
Prior art keywords
quadriphone
decoder
reproduction system
reproduction
quadriphone reproduction
Prior art date
Application number
BE777215A
Other languages
English (en)
French (fr)
Inventor
B B Bauer
Original Assignee
Columbia Broadcasting Syst Inc
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 Columbia Broadcasting Syst Inc filed Critical Columbia Broadcasting Syst Inc
Publication of BE777215A publication Critical patent/BE777215A/xx

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
    • 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)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Algebra (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
BE777215A 1971-02-24 1971-12-23 Decodeur pour systeme de reproduction quadriphonique BE777215A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11827171A 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
BE777215A true BE777215A (fr) 1972-06-23

Family

ID=22377557

Family Applications (1)

Application Number Title Priority Date Filing Date
BE777215A BE777215A (fr) 1971-02-24 1971-12-23 Decodeur pour systeme de reproduction quadriphonique

Country Status (11)

Country Link
US (1) US3784744A (xx)
JP (1) JPS5240561B1 (xx)
AU (1) AU460098B2 (xx)
BE (1) BE777215A (xx)
CA (1) CA981589A (xx)
DE (1) DE2208099C3 (xx)
FR (1) FR2126176B1 (xx)
GB (2) GB1387873A (xx)
IL (1) IL38130A (xx)
IT (1) IT948394B (xx)
NL (1) NL7115538A (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911222A (en) * 1970-12-09 1975-10-07 Kenwood Corp Method and a device for producing a 4-channel stereophonic sound field
US3883692A (en) * 1972-06-16 1975-05-13 Sony Corp Decoder apparatus with logic circuit for use with a four channel stereo
JPS5645358B2 (xx) * 1973-11-29 1981-10-26
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632886A (en) * 1969-12-29 1972-01-04 Peter Scheiber Quadrasonic sound system
US3708631A (en) * 1970-06-08 1973-01-02 Columbia Broadcasting Syst Inc Quadraphonic reproducing system with gain control

Also Published As

Publication number Publication date
IL38130A (en) 1974-09-10
IL38130A0 (en) 1972-01-27
FR2126176A1 (xx) 1972-10-06
AU3710771A (en) 1973-06-28
AU460098B2 (en) 1975-04-17
DE2208099A1 (de) 1972-09-07
DE2208099C3 (de) 1979-03-01
US3784744A (en) 1974-01-08
NL7115538A (xx) 1972-08-28
GB1379771A (en) 1975-01-08
GB1387873A (en) 1975-03-19
DE2208099B2 (de) 1978-07-06
JPS5240561B1 (xx) 1977-10-13
CA981589A (en) 1976-01-13
FR2126176B1 (xx) 1976-04-30
IT948394B (it) 1973-05-30

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