JPS57113690A - Ultrasonic wave transmitter-receiver - Google Patents

Ultrasonic wave transmitter-receiver

Info

Publication number
JPS57113690A
JPS57113690A JP18819380A JP18819380A JPS57113690A JP S57113690 A JPS57113690 A JP S57113690A JP 18819380 A JP18819380 A JP 18819380A JP 18819380 A JP18819380 A JP 18819380A JP S57113690 A JPS57113690 A JP S57113690A
Authority
JP
Japan
Prior art keywords
oscillators
conductive elastic
receiver
ultrasonic wave
outside via
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
JP18819380A
Other languages
English (en)
Japanese (ja)
Other versions
JPS632200B2 (2
Inventor
Tsuneo Torii
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP18819380A priority Critical patent/JPS57113690A/ja
Publication of JPS57113690A publication Critical patent/JPS57113690A/ja
Publication of JPS632200B2 publication Critical patent/JPS632200B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP18819380A 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver Granted JPS57113690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18819380A JPS57113690A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18819380A JPS57113690A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Publications (2)

Publication Number Publication Date
JPS57113690A true JPS57113690A (en) 1982-07-15
JPS632200B2 JPS632200B2 (2) 1988-01-18

Family

ID=16219391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18819380A Granted JPS57113690A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Country Status (1)

Country Link
JP (1) JPS57113690A (2)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219554U (2) * 1975-07-30 1977-02-12
JPS53103676U (2) * 1977-01-25 1978-08-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219554U (2) * 1975-07-30 1977-02-12
JPS53103676U (2) * 1977-01-25 1978-08-21

Also Published As

Publication number Publication date
JPS632200B2 (2) 1988-01-18

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