FR2221779B1 - - Google Patents

Info

Publication number
FR2221779B1
FR2221779B1 FR7345603A FR7345603A FR2221779B1 FR 2221779 B1 FR2221779 B1 FR 2221779B1 FR 7345603 A FR7345603 A FR 7345603A FR 7345603 A FR7345603 A FR 7345603A FR 2221779 B1 FR2221779 B1 FR 2221779B1
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.)
Expired
Application number
FR7345603A
Other versions
FR2221779A1 (fr
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of FR2221779A1 publication Critical patent/FR2221779A1/fr
Application granted granted Critical
Publication of FR2221779B1 publication Critical patent/FR2221779B1/fr
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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Algebra (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Otolaryngology (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Electric Clocks (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Stereophonic System (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
FR7345603A 1972-12-29 1973-12-19 Expired FR2221779B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973003987U JPS5653457Y2 (fr) 1972-12-29 1972-12-29

Publications (2)

Publication Number Publication Date
FR2221779A1 FR2221779A1 (fr) 1974-10-11
FR2221779B1 true FR2221779B1 (fr) 1977-06-10

Family

ID=11572361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7345603A Expired FR2221779B1 (fr) 1972-12-29 1973-12-19

Country Status (7)

Country Link
US (1) US3914790A (fr)
JP (1) JPS5653457Y2 (fr)
CA (1) CA981590A (fr)
DE (1) DE2364480A1 (fr)
FR (1) FR2221779B1 (fr)
GB (1) GB1430210A (fr)
NL (1) NL7317350A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527708A (en) * 1975-07-08 1977-01-21 Sony Corp Tape recorder
US4479235A (en) * 1981-05-08 1984-10-23 Rca Corporation Switching arrangement for a stereophonic sound synthesizer
JPH04265569A (ja) * 1991-02-19 1992-09-21 Canon Inc 音声信号記録装置及び再生装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730532A (en) * 1970-06-09 1973-05-01 Victor Company Of Japan Combination four-channel two-channel stereophonic endless cartridge tape player
US3684835A (en) * 1970-07-29 1972-08-15 Parasound Inc Four channel stereo synthesizer
US3761628A (en) * 1972-04-13 1973-09-25 Columbia Broadcasting Syst Inc Stereo-quadraphonic matrix system with matrix or discrete sound reproduction capability

Also Published As

Publication number Publication date
DE2364480A1 (de) 1974-07-04
JPS49108017U (fr) 1974-09-14
NL7317350A (fr) 1974-07-02
FR2221779A1 (fr) 1974-10-11
GB1430210A (en) 1976-03-31
JPS5653457Y2 (fr) 1981-12-12
US3914790A (en) 1975-10-21
CA981590A (en) 1976-01-13

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Legal Events

Date Code Title Description
ST Notification of lapse