Means for improving the electroacoustical properties of a...

Details Means for improving the electroacoustical properties of a... Means for improving the electroacoustical properties of a...

G - Physics

10

D

84/63

G10D 13/00 (2006.01) G10F 1/08 (2006.01) G10K 9/10 (2006.01) G10K 9/20 (2006.01)

Patent

CA 1107992

MEANS FOR IMPROVING THE ELECTROACOUSTICAL PROPERTIES OF A BUZZER Abstract of the Disclosure The electroacoustical properties of an electromechanical vibrating device for producing an audible signal are improved by attenuating undesirable frequencies of the audible signal to produce a predominant frequency and by accentuating the predominant frequency. The improvement includes a planar vibration diaphram comprised of a plastic polymer material, a vibrating striking member positioned to strike the vibration diaphram at its center; a bumper comprised of resilient material interposed between the vibrating striking member and the vibration diaphram, and a resonant chamber in spaced relation to the vibration diaphram having a resonant frequency substantially equal to the predominant frequency.

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