Capacitor microphone

Details Capacitor microphone Capacitor microphone

2005-11-01

2005-11-01

Le, Huyen (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S369000, C381S191000

Reexamination Certificate

active

06961437

ABSTRACT:
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 capsule20and a capsule support10A which are connected through a connecting screw24. A contacting terminal140contacting to a contact pin23of the microphone capsule20is disposed on the printed circuit board120housed in the capsule support10A with an electric insulating block180held in the contacting terminal140and is fixed through the block180and an electric insulating cap member160. Whereby, the cap member160increases 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.

REFERENCES:
patent: 5272758 (1993-12-01), Isogami et al.
patent: 6549632 (2003-04-01), Akino et al.

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