JPS57138233A - Underwater transmitter and receiver - Google Patents

Underwater transmitter and receiver

Info

Publication number
JPS57138233A
JPS57138233A JP2395181A JP2395181A JPS57138233A JP S57138233 A JPS57138233 A JP S57138233A JP 2395181 A JP2395181 A JP 2395181A JP 2395181 A JP2395181 A JP 2395181A JP S57138233 A JPS57138233 A JP S57138233A
Authority
JP
Japan
Prior art keywords
axis
sound pressure
piezoelectric material
coordinates
length
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
JP2395181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6362160B2 (cs
Inventor
Haimi Takasaki
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 JP2395181A priority Critical patent/JPS57138233A/ja
Publication of JPS57138233A publication Critical patent/JPS57138233A/ja
Publication of JPS6362160B2 publication Critical patent/JPS6362160B2/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Landscapes

  • 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)
JP2395181A 1981-02-20 1981-02-20 Underwater transmitter and receiver Granted JPS57138233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2395181A JPS57138233A (en) 1981-02-20 1981-02-20 Underwater transmitter and receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2395181A JPS57138233A (en) 1981-02-20 1981-02-20 Underwater transmitter and receiver

Publications (2)

Publication Number Publication Date
JPS57138233A true JPS57138233A (en) 1982-08-26
JPS6362160B2 JPS6362160B2 (cs) 1988-12-01

Family

ID=12124851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2395181A Granted JPS57138233A (en) 1981-02-20 1981-02-20 Underwater transmitter and receiver

Country Status (1)

Country Link
JP (1) JPS57138233A (cs)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109535U (cs) * 1978-01-18 1979-08-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109535U (cs) * 1978-01-18 1979-08-01

Also Published As

Publication number Publication date
JPS6362160B2 (cs) 1988-12-01

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