JPS51148404A - Head-phone device - Google Patents

Head-phone device

Info

Publication number
JPS51148404A
JPS51148404A JP50072186A JP7218675A JPS51148404A JP S51148404 A JPS51148404 A JP S51148404A JP 50072186 A JP50072186 A JP 50072186A JP 7218675 A JP7218675 A JP 7218675A JP S51148404 A JPS51148404 A JP S51148404A
Authority
JP
Japan
Prior art keywords
head
phone device
listener
circuit
lectricity
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.)
Granted
Application number
JP50072186A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5421243B2 (en, 2012
Inventor
Katsumi Murai
Yoichi Kimura
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
Priority to JP50072186A priority Critical patent/JPS51148404A/ja
Publication of JPS51148404A publication Critical patent/JPS51148404A/ja
Publication of JPS5421243B2 publication Critical patent/JPS5421243B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Stereophonic System (AREA)
JP50072186A 1975-06-13 1975-06-13 Head-phone device Granted JPS51148404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50072186A JPS51148404A (en) 1975-06-13 1975-06-13 Head-phone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50072186A JPS51148404A (en) 1975-06-13 1975-06-13 Head-phone device

Publications (2)

Publication Number Publication Date
JPS51148404A true JPS51148404A (en) 1976-12-20
JPS5421243B2 JPS5421243B2 (en, 2012) 1979-07-28

Family

ID=13481919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50072186A Granted JPS51148404A (en) 1975-06-13 1975-06-13 Head-phone device

Country Status (1)

Country Link
JP (1) JPS51148404A (en, 2012)

Also Published As

Publication number Publication date
JPS5421243B2 (en, 2012) 1979-07-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees