Electro-acoustic transducer

Details Electro-acoustic transducer Electro-acoustic transducer

1981-02-24

1983-04-05

Fuller, Benjamin R.

Electrical generator or motor structure

Dynamoelectric

Rotary

179180, 310322, 181151, 181160, H04R 1500

Patent

active

043792120

ABSTRACT:
An electrical acoustical transducer is provided having a piezoelectrical layer in a housing with a transducer plate. The transducer plate divides the housing into a front chamber and a rear chamber. In the rear chamber, there is provided a Helmholtz resonator for the attenuation of resonance increases. With the invention a Helmholtz resonator is designed such that its acoustical characteristics do not change through environmental influences. Instead of covering the resonator by means of a customary silk disk, several narrow slots are arranged in the carrier plate.

REFERENCES:
patent: 2252846 (1941-08-01), Giannini et al.
patent: 4292561 (1981-09-01), Martin

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