Microphone apparatus

Details Microphone apparatus Microphone apparatus

2006-05-09

2006-05-09

Tran, Sinh (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S356000

Reexamination Certificate

active

07043043

ABSTRACT:
There is provided a microphone apparatus with an adjusting mechanism that prevents wind noise generated at a sound absorbing hole from perceptively inputted in the structure having a microphone built-in at the back of a panel with a sound absorbing hole.A sound box is structured between a sound absorbing hole of a panel and a sound perceptible portion of a microphone, and a movable piece that slidably moves in the sound box is formed. A screw rod is annexed to the movable piece, and a disk screwed with the screw rod is restricted and interposed between a tubular portion, serving as an outer frame of the sound box, and a support portion formed at the lower portion. A part of the disk is exposed to the front surface side from a slit of the panel, and the disk is rotated to move the movable piece, whereby changing a resonant frequency of a ventilation space of the sound box and a ventilation cross.

REFERENCES:
patent: 4170721 (1979-10-01), Ishibashi et al.
patent: 06-339192 (1994-12-01), None

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