Capacitor microphone

摘要

It is an object of the present invention to securely prevent a generation of an acoustic resonance due to a rear air chamber of a capsule support in a capacitor microphone including a microphone capsule and the capsule support and to improve assembly of a contacting terminal which is mounted in the capsule support. According to FIG. 1 , a capacitor microphone of the present invention includes a microphone capsule 20 and a capsule support 10 A which are connected through a connecting screw 24 . A contacting terminal 140 contacting to a contact pin 23 of the microphone capsule 20 is disposed on the printed circuit board 120 housed in the capsule support 10 A with an electric insulating block 180 held in the contacting terminal 140 and is fixed through the block 180 and an electric insulating cap member 160 . Whereby, the cap member 160 increases the air proof grade of a rear air chamber and makes the air volume of the chamber as small as possible and constant so that an acoustic resonance is not generated.