AU3710771A - Improved decoder for quadruphonic sound - Google Patents

Improved decoder for quadruphonic sound

Info

Publication number
AU3710771A
AU3710771A AU37107/71A AU3710771A AU3710771A AU 3710771 A AU3710771 A AU 3710771A AU 37107/71 A AU37107/71 A AU 37107/71A AU 3710771 A AU3710771 A AU 3710771A AU 3710771 A AU3710771 A AU 3710771A
Authority
AU
Australia
Prior art keywords
quadruphonic
sound
improved decoder
decoder
improved
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
AU37107/71A
Other versions
AU460098B2 (en
Inventor
B. Bauer Benjamin
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.)
CBS Broadcasting Inc
Original Assignee
Columbia Broadcasting System 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 System Inc filed Critical Columbia Broadcasting System Inc
Publication of AU3710771A publication Critical patent/AU3710771A/en
Application granted granted Critical
Publication of AU460098B2 publication Critical patent/AU460098B2/en
Expired legal-status Critical Current

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)
AU37107/71A 1971-02-24 1971-12-20 Improved decoder for quadruphonic sound Expired AU460098B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11827171A 1971-02-24 1971-02-24
USUS118,271 1971-02-24

Publications (2)

Publication Number Publication Date
AU3710771A true AU3710771A (en) 1973-06-28
AU460098B2 AU460098B2 (en) 1975-04-17

Family

ID=22377557

Family Applications (1)

Application Number Title Priority Date Filing Date
AU37107/71A Expired AU460098B2 (en) 1971-02-24 1971-12-20 Improved decoder for quadruphonic sound

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) GB1387873A (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
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
BE777215A (en) 1972-06-23
FR2126176A1 (en) 1972-10-06
AU460098B2 (en) 1975-04-17
DE2208099A1 (en) 1972-09-07
DE2208099C3 (en) 1979-03-01
US3784744A (en) 1974-01-08
NL7115538A (en) 1972-08-28
GB1379771A (en) 1975-01-08
GB1387873A (en) 1975-03-19
DE2208099B2 (en) 1978-07-06
JPS5240561B1 (en) 1977-10-13
CA981589A (en) 1976-01-13
FR2126176B1 (en) 1976-04-30
IT948394B (en) 1973-05-30

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