Acoustic transducer with high sensitivity

摘要

An acoustic transducer with high sensitivity includes a base plate, a back plate and a vibrating membrane. The vibrating membrane is peripherally fixed to the base plate and covers an opening of the base plate. The back plate has a positioning member connected between the back plate and the vibrating membrane, so as to define at least one vibratile portion that is arranged annularly by a plurality of elastic members. Thereby, the vibratile portion has a reduced deformable width and increased rigidity, so can effectively improve its acoustically receiving sensitivity and signal-to-noise ratio.

主权项

1. An acoustic transducer with high sensitivity, comprising:
a base plate having an opening; a back plate; a vibrating membrane being peripherally fixed to the base plate and covering the opening; a positioning member connecting between the back plate and a central part of the vibrating membrane, and at least one vibratile portion defined; a plurality of elastic members are more elastic than the vibratile portion and arranging peripherally around the vibratile portion; and wherein the plurality of elastic members are arranged annularly along an inner periphery and an outer periphery of the vibratile portion, which the inner and outer peripheries are relatively adjacent to and far from the positioning member respectively.