JPS5780899A - Transmitter and receiver - Google Patents

Transmitter and receiver

Info

Publication number
JPS5780899A
JPS5780899A JP15651780A JP15651780A JPS5780899A JP S5780899 A JPS5780899 A JP S5780899A JP 15651780 A JP15651780 A JP 15651780A JP 15651780 A JP15651780 A JP 15651780A JP S5780899 A JPS5780899 A JP S5780899A
Authority
JP
Japan
Prior art keywords
sheet
cylinder
acoustic impedance
piezoelectric sheet
molded
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
JP15651780A
Other languages
English (en)
Japanese (ja)
Other versions
JPS632198B2 (enrdf_load_stackoverflow
Inventor
Haimi Takasaki
Yukio Saito
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 JP15651780A priority Critical patent/JPS5780899A/ja
Publication of JPS5780899A publication Critical patent/JPS5780899A/ja
Publication of JPS632198B2 publication Critical patent/JPS632198B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
JP15651780A 1980-11-07 1980-11-07 Transmitter and receiver Granted JPS5780899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15651780A JPS5780899A (en) 1980-11-07 1980-11-07 Transmitter and receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15651780A JPS5780899A (en) 1980-11-07 1980-11-07 Transmitter and receiver

Publications (2)

Publication Number Publication Date
JPS5780899A true JPS5780899A (en) 1982-05-20
JPS632198B2 JPS632198B2 (enrdf_load_stackoverflow) 1988-01-18

Family

ID=15629505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15651780A Granted JPS5780899A (en) 1980-11-07 1980-11-07 Transmitter and receiver

Country Status (1)

Country Link
JP (1) JPS5780899A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542474A (en) * 1978-09-21 1980-03-25 Nec Corp Polymer piezoelectric vibrator and its manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542474A (en) * 1978-09-21 1980-03-25 Nec Corp Polymer piezoelectric vibrator and its manufacture

Also Published As

Publication number Publication date
JPS632198B2 (enrdf_load_stackoverflow) 1988-01-18

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