It uses PVDF film as a sensing material, which is pasted inside the wall of a cylinder made of a flexible organic material.

• 采用PVDF薄膜作为换能材料,聚碳酸脂作为背衬,薄膜粘贴在背衬的内壁,软性的背衬在声压的作用下形变,从而带动薄膜形变,产生电信号输出。