JPS57113698A - Piezoelectric speaker - Google Patents

Piezoelectric speaker

Info

Publication number
JPS57113698A
JPS57113698A JP94281A JP94281A JPS57113698A JP S57113698 A JPS57113698 A JP S57113698A JP 94281 A JP94281 A JP 94281A JP 94281 A JP94281 A JP 94281A JP S57113698 A JPS57113698 A JP S57113698A
Authority
JP
Japan
Prior art keywords
piezoelectric
bimorph
piezoelectric speaker
band
piezoelectric bimorph
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.)
Pending
Application number
JP94281A
Other languages
Japanese (ja)
Inventor
Masanobu Fujisaki
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP94281A priority Critical patent/JPS57113698A/en
Publication of JPS57113698A publication Critical patent/JPS57113698A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

PURPOSE:To lower the resonance frequency, by using piezoelectric bimorph formed as a series of band as a sound source, and thus the mechanical impedance of diaphragm system of a piezoelectric speaker is decreased. CONSTITUTION:A piezoelectric bimorph 11 is used as a drive source of a piezoelectric speaker, and the piezoelectric bimorph is formed to a series of band. The bimorph 11 uses the displacement between the circumference and the center, and the shape of connection is as shown in figure. By using the piezoelectric bimorph 11 like this as the sound generating source, the mechanical impedance of oscillation system of the piezoelectric speaker can be lowered, the resonance frequency can be decreased and the playback frequency band can be spread greatly to low tone side.
JP94281A 1981-01-06 1981-01-06 Piezoelectric speaker Pending JPS57113698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP94281A JPS57113698A (en) 1981-01-06 1981-01-06 Piezoelectric speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP94281A JPS57113698A (en) 1981-01-06 1981-01-06 Piezoelectric speaker

Publications (1)

Publication Number Publication Date
JPS57113698A true JPS57113698A (en) 1982-07-15

Family

ID=11487720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP94281A Pending JPS57113698A (en) 1981-01-06 1981-01-06 Piezoelectric speaker

Country Status (1)

Country Link
JP (1) JPS57113698A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233953A (en) * 1975-09-11 1977-03-15 Shiyouki Chiyou Method of producing molded product mainly containing polyethylene terephthalate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233953A (en) * 1975-09-11 1977-03-15 Shiyouki Chiyou Method of producing molded product mainly containing polyethylene terephthalate

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