CA965355A - Four-channel stereophonic device - Google Patents

Four-channel stereophonic device

Info

Publication number
CA965355A
CA965355A CA146,606A CA146606A CA965355A CA 965355 A CA965355 A CA 965355A CA 146606 A CA146606 A CA 146606A CA 965355 A CA965355 A CA 965355A
Authority
CA
Canada
Prior art keywords
channel stereophonic
stereophonic device
channel
stereophonic
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
CA146,606A
Other versions
CA146606S (en
Inventor
Kanji Odagi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA965355A publication Critical patent/CA965355A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
CA146,606A 1971-07-08 1972-07-07 Four-channel stereophonic device Expired CA965355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5053571 1971-07-08

Publications (1)

Publication Number Publication Date
CA965355A true CA965355A (en) 1975-04-01

Family

ID=34532089

Family Applications (1)

Application Number Title Priority Date Filing Date
CA146,606A Expired CA965355A (en) 1971-07-08 1972-07-07 Four-channel stereophonic device

Country Status (4)

Country Link
US (1) US3830978A (en)
CA (1) CA965355A (en)
FR (1) FR2144897B1 (en)
GB (1) GB1399511A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952156A (en) * 1972-09-07 1976-04-20 Xerox Corporation Signal processing system
HU165189B (en) * 1972-12-28 1974-07-27
GB1494751A (en) * 1974-03-26 1977-12-14 Nat Res Dev Sound reproduction systems
US3984636A (en) * 1975-03-06 1976-10-05 Koss Corporation Quadraphonic headphone with ambience programmer
JPS51132803A (en) * 1975-04-17 1976-11-18 Nippon Hoso Kyokai <Nhk> Sound field expander
US4232190A (en) * 1978-02-06 1980-11-04 Laiacona Michael N Apparatus for combining phonograph signal with auxiliary audio signal
US4204092A (en) * 1978-04-11 1980-05-20 Bruney Paul F Audio image recovery system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110769A (en) * 1959-01-17 1963-11-12 Telefunken Gmbh Stereo sound control system
US3082295A (en) * 1959-12-08 1963-03-19 All Union Res Inst Of Cinemato Panoramic mixer
US3170991A (en) * 1963-11-27 1965-02-23 Glasgal Ralph System for stereo separation ratio control, elimination of cross-talk and the like
CA938560A (en) * 1969-11-28 1973-12-18 Victor Company Of Japan System for recording and/or reproducing four channel signals on a record disc
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
US3830978A (en) 1974-08-20
GB1399511A (en) 1975-07-02
DE2232909A1 (en) 1973-01-18
DE2232909B2 (en) 1976-06-10
FR2144897B1 (en) 1976-05-14
FR2144897A1 (en) 1973-02-16

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