GB1403407A - Quadraphonic sound reproduction apparatus - Google Patents

Quadraphonic sound reproduction apparatus

Info

Publication number
GB1403407A
GB1403407A GB4644672A GB4644672A GB1403407A GB 1403407 A GB1403407 A GB 1403407A GB 4644672 A GB4644672 A GB 4644672A GB 4644672 A GB4644672 A GB 4644672A GB 1403407 A GB1403407 A GB 1403407A
Authority
GB
United Kingdom
Prior art keywords
channel
signal
balance
channels
quadraphonic
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
GB4644672A
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB1403407A publication Critical patent/GB1403407A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
GB4644672A 1971-10-09 1972-10-09 Quadraphonic sound reproduction apparatus Expired GB1403407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7963871A JPS5340081B2 (de) 1971-10-09 1971-10-09

Publications (1)

Publication Number Publication Date
GB1403407A true GB1403407A (en) 1975-08-28

Family

ID=13695624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4644672A Expired GB1403407A (en) 1971-10-09 1972-10-09 Quadraphonic sound reproduction apparatus

Country Status (4)

Country Link
JP (1) JPS5340081B2 (de)
DE (1) DE2249416C3 (de)
GB (1) GB1403407A (de)
NL (1) NL7213639A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149036A (en) * 1976-05-19 1979-04-10 Nippon Columbia Kabushikikaisha Crosstalk compensating circuit

Also Published As

Publication number Publication date
DE2249416A1 (de) 1973-04-19
JPS4845202A (de) 1973-06-28
NL7213639A (de) 1973-04-11
JPS5340081B2 (de) 1978-10-25
DE2249416C3 (de) 1980-03-20
DE2249416B2 (de) 1979-07-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee