GB1399511A - Quadraphonic devices - Google Patents

Quadraphonic devices

Info

Publication number
GB1399511A
GB1399511A GB3182172A GB3182172A GB1399511A GB 1399511 A GB1399511 A GB 1399511A GB 3182172 A GB3182172 A GB 3182172A GB 3182172 A GB3182172 A GB 3182172A GB 1399511 A GB1399511 A GB 1399511A
Authority
GB
United Kingdom
Prior art keywords
outputs
signals
range
output signal
output
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
GB3182172A
Other languages
English (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 GB1399511A publication Critical patent/GB1399511A/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
    • 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)
GB3182172A 1971-07-08 1972-07-06 Quadraphonic devices Expired GB1399511A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1399511A true GB1399511A (en) 1975-07-02

Family

ID=34532089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3182172A Expired GB1399511A (en) 1971-07-08 1972-07-06 Quadraphonic devices

Country Status (4)

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

Families Citing this family (7)

* 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
HU165189B (enrdf_load_stackoverflow) * 1972-12-28 1974-07-27
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

Also Published As

Publication number Publication date
FR2144897A1 (enrdf_load_stackoverflow) 1973-02-16
DE2232909B2 (de) 1976-06-10
CA965355A (en) 1975-04-01
DE2232909A1 (de) 1973-01-18
FR2144897B1 (enrdf_load_stackoverflow) 1976-05-14
US3830978A (en) 1974-08-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee