CA973806A - Apparatus for reproducing quadraphonic sound - Google Patents

Apparatus for reproducing quadraphonic sound

Info

Publication number
CA973806A
CA973806A CA144,532A CA144532A CA973806A CA 973806 A CA973806 A CA 973806A CA 144532 A CA144532 A CA 144532A CA 973806 A CA973806 A CA 973806A
Authority
CA
Canada
Prior art keywords
reproducing
quadraphonic sound
quadraphonic
sound
reproducing quadraphonic
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
CA144,532A
Inventor
Benjamin B. Bauer
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
CBS 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 CBS Inc filed Critical CBS Inc
Priority to CA215,813A priority Critical patent/CA975685A/en
Application granted granted Critical
Publication of CA973806A publication Critical patent/CA973806A/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)
  • Stereo-Broadcasting Methods (AREA)
CA144,532A 1971-06-23 1972-06-13 Apparatus for reproducing quadraphonic sound Expired CA973806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA215,813A CA975685A (en) 1971-06-23 1974-12-12 Apparatus for reproducing quadraphonic sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15597671A 1971-06-23 1971-06-23

Publications (1)

Publication Number Publication Date
CA973806A true CA973806A (en) 1975-09-02

Family

ID=22557545

Family Applications (1)

Application Number Title Priority Date Filing Date
CA144,532A Expired CA973806A (en) 1971-06-23 1972-06-13 Apparatus for reproducing quadraphonic sound

Country Status (10)

Country Link
US (1) US3798373A (en)
JP (1) JPS5110963B1 (en)
AU (1) AU464001B2 (en)
BE (1) BE785279A (en)
CA (1) CA973806A (en)
DE (1) DE2230842C3 (en)
FR (1) FR2143325B1 (en)
GB (1) GB1396352A (en)
IT (1) IT958512B (en)
NL (1) NL7208607A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398786A (en) * 1971-08-06 1975-06-25 Sony Corp Multisignal transmission apparatus
DE2252132C3 (en) 1972-10-24 1982-08-26 Sansui Electric Co., Ltd., Tokyo Decoder for a 4-2-4 matrix system
JPS5527517B2 (en) * 1972-12-01 1980-07-21
JPS5320343B2 (en) * 1973-03-29 1978-06-26
GB1514162A (en) * 1974-03-25 1978-06-14 Ruggles W Directional enhancement system for quadraphonic decoders
US3937885A (en) * 1974-09-06 1976-02-10 Motorola, Inc. Control circuit for a matrixed four channel audio reproducing system
JPS5453831U (en) * 1977-09-22 1979-04-13
JPS54137248U (en) * 1978-03-17 1979-09-22
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
US4862502A (en) * 1988-01-06 1989-08-29 Lexicon, Inc. Sound reproduction
US5136650A (en) * 1991-01-09 1992-08-04 Lexicon, Inc. Sound reproduction
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

Family Cites Families (3)

* 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
US3646574A (en) * 1970-05-25 1972-02-29 Howard S Holzer Compatible stereo generator
US3684835A (en) * 1970-07-29 1972-08-15 Parasound Inc Four channel stereo synthesizer

Also Published As

Publication number Publication date
JPS5110963B1 (en) 1976-04-08
BE785279A (en) 1972-10-16
GB1396352A (en) 1975-06-04
DE2230842B2 (en) 1980-02-21
FR2143325A1 (en) 1973-02-02
IT958512B (en) 1973-10-30
NL7208607A (en) 1972-12-28
US3798373A (en) 1974-03-19
DE2230842A1 (en) 1972-12-28
AU464001B2 (en) 1975-08-14
AU4377572A (en) 1974-01-03
FR2143325B1 (en) 1979-04-06
DE2230842C3 (en) 1980-10-16

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