NL7115538A - - Google Patents

Info

Publication number
NL7115538A
NL7115538A NL7115538A NL7115538A NL7115538A NL 7115538 A NL7115538 A NL 7115538A NL 7115538 A NL7115538 A NL 7115538A NL 7115538 A NL7115538 A NL 7115538A NL 7115538 A NL7115538 A NL 7115538A
Authority
NL
Netherlands
Application number
NL7115538A
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
Publication of NL7115538A publication Critical patent/NL7115538A/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)
NL7115538A 1971-02-24 1971-11-11 NL7115538A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL7115538A true NL7115538A (en) 1972-08-28

Family

ID=22377557

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7115538A NL7115538A (en) 1971-02-24 1971-11-11

Country Status (11)

Country Link
US (1) US3784744A (en)
JP (1) JPS5240561B1 (en)
AU (1) AU460098B2 (en)
BE (1) BE777215A (en)
CA (1) CA981589A (en)
DE (1) DE2208099C3 (en)
FR (1) FR2126176B1 (en)
GB (2) GB1379771A (en)
IL (1) IL38130A (en)
IT (1) IT948394B (en)
NL (1) NL7115538A (en)

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 (en) * 1973-11-29 1981-10-26
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

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
IT948394B (en) 1973-05-30
GB1387873A (en) 1975-03-19
IL38130A0 (en) 1972-01-27
IL38130A (en) 1974-09-10
FR2126176B1 (en) 1976-04-30
FR2126176A1 (en) 1972-10-06
AU460098B2 (en) 1975-04-17
GB1379771A (en) 1975-01-08
BE777215A (en) 1972-06-23
CA981589A (en) 1976-01-13
AU3710771A (en) 1973-06-28
DE2208099A1 (en) 1972-09-07
DE2208099C3 (en) 1979-03-01
US3784744A (en) 1974-01-08
DE2208099B2 (en) 1978-07-06
JPS5240561B1 (en) 1977-10-13

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Legal Events

Date Code Title Description
BV The patent application has lapsed