CA976485A - Apparatus for reproducing quadruphonic sound - Google Patents

Apparatus for reproducing quadruphonic sound

Info

Publication number
CA976485A
CA976485A CA145,057A CA145057A CA976485A CA 976485 A CA976485 A CA 976485A CA 145057 A CA145057 A CA 145057A CA 976485 A CA976485 A CA 976485A
Authority
CA
Canada
Prior art keywords
quadruphonic
reproducing
sound
reproducing quadruphonic
quadruphonic sound
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
CA145,057A
Inventor
Mitsuo Ohsawa
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
Application granted granted Critical
Publication of CA976485A publication Critical patent/CA976485A/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
CA145,057A 1971-06-21 1972-06-19 Apparatus for reproducing quadruphonic sound Expired CA976485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46044622A JPS5147321B1 (en) 1971-06-21 1971-06-21

Publications (1)

Publication Number Publication Date
CA976485A true CA976485A (en) 1975-10-21

Family

ID=12696520

Family Applications (1)

Application Number Title Priority Date Filing Date
CA145,057A Expired CA976485A (en) 1971-06-21 1972-06-19 Apparatus for reproducing quadruphonic sound

Country Status (8)

Country Link
US (1) US3821474A (en)
JP (1) JPS5147321B1 (en)
CA (1) CA976485A (en)
DE (1) DE2230162A1 (en)
FR (1) FR2143223B1 (en)
GB (1) GB1384610A (en)
IT (1) IT956758B (en)
NL (1) NL7208328A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967063A (en) * 1971-06-23 1976-06-29 Cbs Inc. Logic for matrix systems for reproducing quadraphonic sound
DE2445123C3 (en) * 1973-09-26 1980-03-06 Hitachi, Ltd. Analog signal processing circuit
DK152478C (en) * 1985-12-06 1988-07-25 Ole Sparkjaer PROCEDURE AND CIRCUIT FOR DECODING FOUR CHANNEL SIGNALS WHICH ARE THE MATRIX CODE AND EXISTING IN THE FORM OF A TWO CHANNEL SIGNAL
CN104380603B (en) 2012-05-31 2017-06-20 杜比实验室特许公司 Low latency and low complex degree phase-shift network

Also Published As

Publication number Publication date
US3821474A (en) 1974-06-28
FR2143223A1 (en) 1973-02-02
DE2230162A1 (en) 1973-04-26
GB1384610A (en) 1975-02-19
IT956758B (en) 1973-10-10
FR2143223B1 (en) 1977-12-23
JPS5147321B1 (en) 1976-12-14
NL7208328A (en) 1972-12-27

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