CA1005350A - Four-channel stereophonic reproducing system - Google Patents

Four-channel stereophonic reproducing system

Info

Publication number
CA1005350A
CA1005350A CA200,775A CA200775A CA1005350A CA 1005350 A CA1005350 A CA 1005350A CA 200775 A CA200775 A CA 200775A CA 1005350 A CA1005350 A CA 1005350A
Authority
CA
Canada
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
CA200,775A
Other versions
CA200775S (en
Inventor
Makoto Okamasa
Yukio Sugimoto
Toyoshi Fukumura
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
Application granted granted Critical
Publication of CA1005350A publication Critical patent/CA1005350A/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)
CA200,775A 1973-05-25 1974-05-24 Four-channel stereophonic reproducing system Expired CA1005350A (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
CA1005350A true CA1005350A (en) 1977-02-15

Family

ID=26403026

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200,775A Expired CA1005350A (en) 1973-05-25 1974-05-24 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
AU481062B2 (en) 1977-02-17
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

Similar Documents

Publication Publication Date Title
CA1011656A (en) Stereophonic sound reproducing apparatus
AU505945B2 (en) Record playback system
CA942198A (en) Multidimensional stereophonic reproducing system
AU508563B2 (en) Stereophonic reproduction system
CA1029856A (en) Cassette locating system
CA1027053A (en) Stereophonic sound system
CA1017256A (en) Loudspeaker and stereophonic loudspeaker system
CA1027166A (en) Reproduction system
CA1036224A (en) Four-channel stereo receiver
CA1003563A (en) Magnetic recording playback system
CA1005349A (en) Four-channel stereophonic reproducing system for reproducing discrete cd-4 four-channel stereo discs
CA1018647A (en) Magnetic tape reproducing system
AU473492B2 (en) Four-channel stereophonic reproducing system
CA1002882A (en) Audio amplifier systems
CA1031202A (en) Multi-purpose audio-visual cassette system
CA999813A (en) Record reproducing system
AU481062B2 (en) Four-channel stereophonic reproducing system
CA1024219A (en) Four-channel stereophonic demodulating system
AU478408B2 (en) Audio play-back system
AU453512B2 (en) Magnetic tape reproducing system
CA1007574A (en) Discrete four-channel disc reproducing system
AU457441B2 (en) Stereophonic reproducing system
AU457307B2 (en) Four-channel stereophonic demodulating system
AU492669B2 (en) Stereophonic sound reproducing apparatus
ZA732008B (en) Audio play-back system