CA974887A - Matrixes and decoders for quadruphonic records - Google Patents

Matrixes and decoders for quadruphonic records

Info

Publication number
CA974887A
CA974887A CA129,044A CA129044A CA974887A CA 974887 A CA974887 A CA 974887A CA 129044 A CA129044 A CA 129044A CA 974887 A CA974887 A CA 974887A
Authority
CA
Canada
Prior art keywords
quadruphonic
matrixes
decoders
records
quadruphonic records
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
CA129,044A
Other languages
English (en)
Other versions
CA129044S (en
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 CA172,795A priority Critical patent/CA961774A/en
Application granted granted Critical
Publication of CA974887A publication Critical patent/CA974887A/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)
  • Fuel Cell (AREA)
CA129,044A 1971-02-03 1971-12-01 Matrixes and decoders for quadruphonic records Expired CA974887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA172,795A CA961774A (en) 1971-02-03 1973-05-31 Matrixes and decoders for quadraphonic records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11216871A 1971-02-03 1971-02-03

Publications (1)

Publication Number Publication Date
CA974887A true CA974887A (en) 1975-09-23

Family

ID=22342450

Family Applications (1)

Application Number Title Priority Date Filing Date
CA129,044A Expired CA974887A (en) 1971-02-03 1971-12-01 Matrixes and decoders for quadruphonic records

Country Status (10)

Country Link
US (1) US3745252A (de)
JP (2) JPS5110961B1 (de)
BE (1) BE778296A (de)
CA (1) CA974887A (de)
DE (1) DE2204098C3 (de)
FR (1) FR2124264A1 (de)
GB (2) GB1385651A (de)
IL (1) IL38277A (de)
IT (1) IT948353B (de)
NL (1) NL7200834A (de)

Families Citing this family (12)

* 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
US3787622A (en) * 1971-02-05 1974-01-22 Sansui Electric Co Quadrasonic sound system for two channel transmission
USRE29171E (en) * 1971-07-02 1977-04-05 Sansui Electric Co., Ltd. Multi-directional sound system
US3906156A (en) 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
JPS4889702A (de) * 1972-02-25 1973-11-22
JPS5210364B2 (de) * 1972-05-02 1977-03-23
GB1416631A (en) * 1972-05-30 1975-12-03 Nippon Columbia Discrete 4-channel stereo recording and/or reproducing system
JPS5332643B2 (de) * 1972-06-06 1978-09-09
JPS5246681B2 (de) * 1972-12-29 1977-11-26
JPS5248002B2 (de) * 1973-09-18 1977-12-07
EP1715538A1 (de) * 2005-04-19 2006-10-25 Nicholas M. Abson Neue Materialien für alkalische Brennstoffzellen
EP1724861A1 (de) * 2005-05-17 2006-11-22 Nicholas M. Abson Neue Materialien für alkalische Elektrolyseure und alkalische Brennstoffzellen

Family Cites Families (1)

* 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

Also Published As

Publication number Publication date
FR2124264A1 (de) 1972-09-22
BE778296A (fr) 1972-07-20
DE2204098B2 (de) 1978-02-09
IL38277A (en) 1974-05-16
IL38277A0 (en) 1972-02-29
DE2204098A1 (de) 1972-08-17
US3745252A (en) 1973-07-10
NL7200834A (de) 1972-08-07
IT948353B (it) 1973-05-30
JPS50152701A (de) 1975-12-09
JPS5110961B1 (de) 1976-04-08
GB1379846A (en) 1975-01-08
DE2204098C3 (de) 1978-09-21
GB1385651A (en) 1975-02-26
JPS5140442B2 (de) 1976-11-04

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