FR2144897A1 - - Google Patents

Info

Publication number
FR2144897A1
FR2144897A1 FR7224807A FR7224807A FR2144897A1 FR 2144897 A1 FR2144897 A1 FR 2144897A1 FR 7224807 A FR7224807 A FR 7224807A FR 7224807 A FR7224807 A FR 7224807A FR 2144897 A1 FR2144897 A1 FR 2144897A1
Authority
FR
France
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.)
Granted
Application number
FR7224807A
Other languages
French (fr)
Other versions
FR2144897B1 (en
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
Publication of FR2144897A1 publication Critical patent/FR2144897A1/fr
Application granted granted Critical
Publication of FR2144897B1 publication Critical patent/FR2144897B1/fr
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)
FR7224807A 1971-07-08 1972-07-07 Expired FR2144897B1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2144897A1 true FR2144897A1 (en) 1973-02-16
FR2144897B1 FR2144897B1 (en) 1976-05-14

Family

ID=34532089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7224807A Expired FR2144897B1 (en) 1971-07-08 1972-07-07

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212717A1 (en) * 1972-12-28 1974-07-26 Elektromechanikai Vallalat

Families Citing this family (6)

* 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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212717A1 (en) * 1972-12-28 1974-07-26 Elektromechanikai Vallalat

Also Published As

Publication number Publication date
FR2144897B1 (en) 1976-05-14
DE2232909B2 (en) 1976-06-10
DE2232909A1 (en) 1973-01-18
CA965355A (en) 1975-04-01
GB1399511A (en) 1975-07-02
US3830978A (en) 1974-08-20

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Legal Events

Date Code Title Description
ST Notification of lapse