directional loudspeaker
1.Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing the parametric array principle.
2.A structure design scheme of audio directional polyvinylidene fluoride(PVDF)film transducer with tunable resonance frequency is proposed to solve one of the key technical problemsie low output powers in audio beam loudspeaker research. The theoretical calculation formula of the key design parameters of this kind of transducer is deduced by theoretical investigation.
