NL7203169A - - Google Patents

Info

Publication number
NL7203169A
NL7203169A NL7203169A NL7203169A NL7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A NL 7203169 A NL7203169 A NL 7203169A
Authority
NL
Netherlands
Application number
NL7203169A
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 filed Critical
Publication of NL7203169A publication Critical patent/NL7203169A/xx

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
NL7203169A 1971-03-15 1972-03-09 NL7203169A (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
NL7203169A true NL7203169A (en) 1972-09-19

Family

ID=22412987

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7203169A NL7203169A (en) 1971-03-15 1972-03-09

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
US5046098A (en) * 1985-03-07 1991-09-03 Dolby Laboratories Licensing Corporation Variable matrix decoder with three output channels
US4941177A (en) * 1985-03-07 1990-07-10 Dolby Laboratories Licensing Corporation Variable matrix decoder
US7251337B2 (en) * 2003-04-24 2007-07-31 Dolby Laboratories Licensing Corporation Volume control in movie theaters
JP5092400B2 (en) * 2004-06-28 2012-12-05 味の素株式会社 Nutritional composition and composition for preventing or improving digestive tract function deterioration
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
CA978860A (en) 1975-12-02
FR2130305B2 (en) 1979-04-27
JPS5110962B2 (en) 1976-04-08
JPS4849401A (en) 1973-07-12
BE780711R (en) 1972-09-15
FR2130306A2 (en) 1972-11-03
DE2209424C3 (en) 1978-09-28
BE780710R (en) 1972-09-15
JPS5136903A (en) 1976-03-29
US3821471A (en) 1974-06-28
GB1387874A (en) 1975-03-19
FR2130305A2 (en) 1972-11-03
DE2209424B2 (en) 1978-01-26
JPS5316281B2 (en) 1978-05-31
DE2209424A1 (en) 1972-09-28
FR2130306B2 (en) 1977-12-23

Similar Documents

Publication Publication Date Title
FR2146394B1 (en)
ATA136472A (en)
AR196074A1 (en)
AU2564071A (en)
AU2952271A (en)
AU2485671A (en)
AU3005371A (en)
AU2894671A (en)
AU2941471A (en)
AU467112B1 (en)
AU2399971A (en)
AU2930871A (en)
AU2654071A (en)
AU2880771A (en)
AU2885171A (en)
AU2875571A (en)
AU2503871A (en)
AU2455871A (en)
AU1109576A (en)
AU2907471A (en)
AU2927871A (en)
AU2577671A (en)
AU2456871A (en)
AU2415871A (en)
AU2938071A (en)

Legal Events

Date Code Title Description
BV The patent application has lapsed