Piezoelectric acoustic speaker system

Details Piezoelectric acoustic speaker system Piezoelectric acoustic speaker system

1975-05-06

1976-08-31

Budd, Mark O.

Electrical generator or motor structure

Educational or construction units or kits

179110A, 307 88ET, 310 82, 310 91, 310 98, H01L 4108

Patent

active

039783537

ABSTRACT:
A Piezoelectric speaker system with a piezoelectric diaphragm supported in a cylindrical form and provided with a plurality of vibration regions, which is capable of controlling the directional characteristics by easy operation according to necessity or listener's preference.

REFERENCES:
patent: 1753137 (1930-04-01), Seibt
patent: 2678967 (1954-05-01), Grosskopf
patent: 3832580 (1974-08-01), Yamamuro et al.

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