AU481062B2 - Four-channel stereophonic reproducing system - Google Patents

Four-channel stereophonic reproducing system

Info

Publication number
AU481062B2
AU481062B2 AU69234/74A AU6923474A AU481062B2 AU 481062 B2 AU481062 B2 AU 481062B2 AU 69234/74 A AU69234/74 A AU 69234/74A AU 6923474 A AU6923474 A AU 6923474A AU 481062 B2 AU481062 B2 AU 481062B2
Authority
AU
Australia
Prior art keywords
reproducing system
channel stereophonic
stereophonic reproducing
channel
stereophonic
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
AU69234/74A
Other versions
AU6923474A (en
Inventor
Makoto Okamasa And Toyoaki Fukumura Yukio Sugimoto
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
Priority claimed from JP6193673U external-priority patent/JPS5136481Y2/ja
Priority claimed from JP6193773U external-priority patent/JPS5123285Y2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of AU6923474A publication Critical patent/AU6923474A/en
Application granted granted Critical
Publication of AU481062B2 publication Critical patent/AU481062B2/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
    • H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
AU69234/74A 1973-05-25 1974-05-25 Four-channel stereophonic reproducing system Expired AU481062B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP6193673U JPS5136481Y2 (en) 1973-05-25 1973-05-25
JP6193773U JPS5123285Y2 (en) 1973-05-25 1973-05-25
JPJP61936/73 1973-05-25
JPJP61937/73 1973-05-25

Publications (2)

Publication Number Publication Date
AU6923474A AU6923474A (en) 1975-11-27
AU481062B2 true AU481062B2 (en) 1977-02-17

Family

ID=26403026

Family Applications (1)

Application Number Title Priority Date Filing Date
AU69234/74A Expired AU481062B2 (en) 1973-05-25 1974-05-25 Four-channel stereophonic reproducing system

Country Status (6)

Country Link
US (1) US3911231A (en)
AU (1) AU481062B2 (en)
CA (1) CA1005350A (en)
DE (1) DE2425191A1 (en)
FR (1) FR2231065B1 (en)
NL (2) NL165027B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL162812C (en) * 1974-03-12 1980-06-16 Matsushita Electric Ind Co Ltd FOUR-CHANNEL DISPLAY FOR THE DISPLAY OF GRAMOPHONE PLATES.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843850A (en) * 1970-06-26 1974-10-22 Victor Co Ltd Four channel record reproducing apparatus with muting of speakers not used for stereo or monaural records
US3711652A (en) * 1971-03-10 1973-01-16 Gen Electric Monolithic stereo decoder with balanced decoder operation
JPS5524320B2 (en) * 1972-05-24 1980-06-27
US3825697A (en) * 1973-07-27 1974-07-23 Gen Motors Corp Phase-lock-loop fm-stereo decoder including stereophonic/monophonic blend system for reducing audio distortion

Also Published As

Publication number Publication date
FR2231065A1 (en) 1974-12-20
DE2425191A1 (en) 1974-12-19
AU6923474A (en) 1975-11-27
US3911231A (en) 1975-10-07
NL7406743A (en) 1974-11-27
NL165027C (en)
NL165027B (en) 1980-09-15
FR2231065B1 (en) 1978-06-16
CA1005350A (en) 1977-02-15

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