BE780710R - RECORDING AND REPRODUCTION SYSTEM - Google Patents

RECORDING AND REPRODUCTION SYSTEM

Info

Publication number
BE780710R
BE780710R BE780710A BE780710A BE780710R BE 780710 R BE780710 R BE 780710R BE 780710 A BE780710 A BE 780710A BE 780710 A BE780710 A BE 780710A BE 780710 R BE780710 R BE 780710R
Authority
BE
Belgium
Prior art keywords
recording
reproduction system
reproduction
Prior art date
Application number
BE780710A
Other languages
French (fr)
Inventor
B B Bauer
Original Assignee
Columbia Broadcasting Syst 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 Columbia Broadcasting Syst Inc filed Critical Columbia Broadcasting Syst Inc
Application granted granted Critical
Publication of BE780710R publication Critical patent/BE780710R/en

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
BE780710A 1971-03-15 1972-03-15 RECORDING AND REPRODUCTION SYSTEM BE780710R (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00124135A US3821471A (en) 1971-03-15 1971-03-15 Apparatus for reproducing quadraphonic sound

Publications (1)

Publication Number Publication Date
BE780710R true BE780710R (en) 1972-09-15

Family

ID=22412987

Family Applications (2)

Application Number Title Priority Date Filing Date
BE780710A BE780710R (en) 1971-03-15 1972-03-15 RECORDING AND REPRODUCTION SYSTEM
BE780711A BE780711R (en) 1971-03-15 1972-03-15 DECODER FOR REPRODUCTIVE SYSTEM

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE780711A BE780711R (en) 1971-03-15 1972-03-15 DECODER FOR REPRODUCTIVE SYSTEM

Country Status (8)

Country Link
US (1) US3821471A (en)
JP (2) JPS5110962B2 (en)
BE (2) BE780710R (en)
CA (1) CA978860A (en)
DE (1) DE2209424C3 (en)
FR (2) FR2130306B2 (en)
GB (1) GB1387874A (en)
NL (1) NL7203169A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645358B2 (en) * 1973-11-29 1981-10-26
JPS5424841B2 (en) * 1974-02-26 1979-08-24
GB1514162A (en) * 1974-03-25 1978-06-14 Ruggles W Directional enhancement system for quadraphonic decoders
US3937885A (en) * 1974-09-06 1976-02-10 Motorola, Inc. Control circuit for a matrixed four channel audio reproducing system
US4018992A (en) * 1975-09-25 1977-04-19 Clifford H. Moulton Decoder for quadraphonic playback
GB1550627A (en) * 1975-11-13 1979-08-15 Nat Res Dev Sound reproduction systems
JPS5827645B2 (en) * 1977-11-24 1983-06-10 株式会社日立製作所 stationary induction equipment
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
US4941177A (en) * 1985-03-07 1990-07-10 Dolby Laboratories Licensing Corporation Variable matrix decoder
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
US7251337B2 (en) * 2003-04-24 2007-07-31 Dolby Laboratories Licensing Corporation Volume control in movie theaters
EP1767201B8 (en) * 2004-06-28 2012-02-29 Ajinomoto Co., Inc. Nutrient composition and composition for prevention/mitigation of digestive tract depression
JP4835298B2 (en) * 2006-07-21 2011-12-14 ソニー株式会社 Audio signal processing apparatus, audio signal processing method and program
US11039263B2 (en) * 2019-05-29 2021-06-15 Mark Petrouske Wide effect sound producing method

Also Published As

Publication number Publication date
JPS5316281B2 (en) 1978-05-31
FR2130305B2 (en) 1979-04-27
CA978860A (en) 1975-12-02
NL7203169A (en) 1972-09-19
FR2130305A2 (en) 1972-11-03
JPS5110962B2 (en) 1976-04-08
JPS4849401A (en) 1973-07-12
GB1387874A (en) 1975-03-19
US3821471A (en) 1974-06-28
DE2209424B2 (en) 1978-01-26
DE2209424A1 (en) 1972-09-28
BE780711R (en) 1972-09-15
JPS5136903A (en) 1976-03-29
FR2130306A2 (en) 1972-11-03
FR2130306B2 (en) 1977-12-23
DE2209424C3 (en) 1978-09-28

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