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JPS5816999

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DESCRIPTION JPS5816999
[0001]
Brief description of the drawings
[0002]
FIG. 1 shows a conventional piezoelectric speaker, and FIG. 2 shows a piezoelectric speaker
according to the present invention. FIG. 3 is a plan view of FIG. FIG. 4 shows sound pressure
frequency characteristics of the conventional speaker and the speaker according to the present
invention. DESCRIPTION OF SYMBOLS 1 ... metal plate, 2 ... piezoelectric element, 3 ... diaphragm,
4 ... several piezoelectric elements, 5 ... electrode plate.
11-05-2019
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