Electro-acoustic conversion film and digital speaker

摘要: Provided is an electro-acoustic conversion film that suitably used for a digital speaker or the like, and includes polymer composite piezoelectric body formed by dispersing particles in viscoelastic matrix of material having viscoelasticity at room temperature, thin-film electrodes provided on both surfaces body, which least one divided into plurality regions same area, respective are coupled parallel grouped to correspond weight each bit digit PCM signal. Thus, reverberation crosstalk between segments suppressed obtained provided.