高分子圧電材料を用いた平板スピーカの多重共振系としての検討

概要

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A flat diaphragm full-range loudspeaker utilizing a piezoelectric polymer is described. This loudspeaker is characterized by an excellently simple constitution and multi-resonance response characteristics. Since the fundamental resonant frequency of a loudspeaker should be as low as possible, it is convenient to utilize the flexural vibration of a bimorph diaphragm. The input-output relation of a bimorph diaphragm radiator in a multi-resonance frequency region is studied theoretically, and the formula for estimating out put sound pressure level for the resonant peak is given. This is also examined experimentally.
社団法人日本音響学会の論文