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JPS56103599A - Composite speaker - Google Patents

Composite speaker

Info

Publication number
JPS56103599A
JPS56103599A JP647880A JP647880A JPS56103599A JP S56103599 A JPS56103599 A JP S56103599A JP 647880 A JP647880 A JP 647880A JP 647880 A JP647880 A JP 647880A JP S56103599 A JPS56103599 A JP S56103599A
Authority
JP
Japan
Prior art keywords
diaphragm
thin film
piezoelectric thin
microphone
detection
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
JP647880A
Other languages
Japanese (ja)
Inventor
Akira Nikaido
Etsuo Yamamoto
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP647880A priority Critical patent/JPS56103599A/en
Publication of JPS56103599A publication Critical patent/JPS56103599A/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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To increase sensitivity of detection of a voice input for a sound generator consisting of a permanent magnet, a diaphragm and a voice coil, by installing a microphone made of a piezoelectric thin film on the back side of the diaphragm. CONSTITUTION:A speaker is formed with the diaphragm 1, yokes 3 and 4, permanent magnet 5 and voice coil 6. A microphone made by forming the electrode 9 on the surface of the piezoelectric thin film 2 is installed on the back side of the diaphragm 1. Thus the sensitivity of detection is increased for the voice input since the microphone is made of a piezoelectric thin film.
JP647880A 1980-01-22 1980-01-22 Composite speaker Pending JPS56103599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP647880A JPS56103599A (en) 1980-01-22 1980-01-22 Composite speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP647880A JPS56103599A (en) 1980-01-22 1980-01-22 Composite speaker

Publications (1)

Publication Number Publication Date
JPS56103599A true JPS56103599A (en) 1981-08-18

Family

ID=11639575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP647880A Pending JPS56103599A (en) 1980-01-22 1980-01-22 Composite speaker

Country Status (1)

Country Link
JP (1) JPS56103599A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857896A (en) * 1981-10-01 1983-04-06 Seiko Epson Corp electroacoustic transducer
US5430803A (en) * 1992-03-31 1995-07-04 Soei Electric Co., Ltd. Bifunctional earphone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857896A (en) * 1981-10-01 1983-04-06 Seiko Epson Corp electroacoustic transducer
US5430803A (en) * 1992-03-31 1995-07-04 Soei Electric Co., Ltd. Bifunctional earphone set

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