Electro-acoustic transducer unit

Details Electro-acoustic transducer unit Electro-acoustic transducer unit

1989-06-08

1990-08-14

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

381159, 310324, H04R 1700

Patent

active

049493876

ABSTRACT:
An electro-acoustic transducer unit for use either as a microphone, a receiver or a voice frequency ringing transducer has a transducer plate fastened between bearing members provided with a piezo-electric layer. By carefully dimensioning the resonator chambers in front of and behind the transducer plate and providing one resonator space with a neck closed by a covering, which is removable, the transducer may be used as a receiver or a microphone or, by removal of the covering, may be used as a voice frequency ringing transducer. The transducer unit is particularly applicable as an electro-acoustic transducer in telephone technology.

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