GB1375782A - - Google Patents

Info

Publication number
GB1375782A
GB1375782A GB531672A GB531672A GB1375782A GB 1375782 A GB1375782 A GB 1375782A GB 531672 A GB531672 A GB 531672A GB 531672 A GB531672 A GB 531672A GB 1375782 A GB1375782 A GB 1375782A
Authority
GB
United Kingdom
Prior art keywords
signals
circuits
fed
given
phase shift
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
GB531672A
Other languages
English (en)
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
Priority claimed from JP46004440A external-priority patent/JPS5219081B1/ja
Priority claimed from JP7913671U external-priority patent/JPS4835301U/ja
Priority claimed from JP7913771U external-priority patent/JPS4835302U/ja
Application filed filed Critical
Publication of GB1375782A publication Critical patent/GB1375782A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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

  • 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)
  • Circuit For Audible Band Transducer (AREA)
GB531672A 1971-02-05 1972-02-04 Expired GB1375782A (enrdf_load_stackoverflow)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP46004440A JPS5219081B1 (enrdf_load_stackoverflow) 1971-02-05 1971-02-05
JP7913671U JPS4835301U (enrdf_load_stackoverflow) 1971-09-01 1971-09-01
JP7913771U JPS4835302U (enrdf_load_stackoverflow) 1971-09-01 1971-09-01

Publications (1)

Publication Number Publication Date
GB1375782A true GB1375782A (enrdf_load_stackoverflow) 1974-11-27

Family

ID=27276275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB531672A Expired GB1375782A (enrdf_load_stackoverflow) 1971-02-05 1972-02-04

Country Status (3)

Country Link
US (1) US3787622A (enrdf_load_stackoverflow)
DE (1) DE2205465C2 (enrdf_load_stackoverflow)
GB (1) GB1375782A (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228361B2 (enrdf_load_stackoverflow) * 1972-03-09 1977-07-26
GB1416631A (en) * 1972-05-30 1975-12-03 Nippon Columbia Discrete 4-channel stereo recording and/or reproducing system
JPS5246681B2 (enrdf_load_stackoverflow) * 1972-12-29 1977-11-26
US3890466A (en) * 1973-02-01 1975-06-17 Cbs Inc Encoders for quadraphonic sound system
JPS5248002B2 (enrdf_load_stackoverflow) * 1973-09-18 1977-12-07
US4096353A (en) * 1976-11-02 1978-06-20 Cbs Inc. Microphone system for producing signals for quadraphonic reproduction
US7212872B1 (en) 2000-05-10 2007-05-01 Dts, Inc. Discrete multichannel audio with a backward compatible mix

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632886A (en) * 1969-12-29 1972-01-04 Peter Scheiber Quadrasonic sound system
US3718773A (en) * 1970-05-18 1973-02-27 Barnard R Four channel recording and reproducing system
US3708631A (en) * 1970-06-08 1973-01-02 Columbia Broadcasting Syst Inc Quadraphonic reproducing system with gain control
US3684835A (en) * 1970-07-29 1972-08-15 Parasound Inc Four channel stereo synthesizer
US3745252A (en) * 1971-02-03 1973-07-10 Columbia Broadcasting Syst Inc Matrixes and decoders for quadruphonic records

Also Published As

Publication number Publication date
US3787622A (en) 1974-01-22
DE2205465A1 (de) 1972-08-24
DE2205465C2 (de) 1984-04-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee