Microphone unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1981
Grant Date -
N/A
app pub date -
May 8, 1978
filing date -
Dec 30, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A telephone transmitter in which a cavity is formed in front of a vibrating membrane of the microphone transmitter to thereby reduce wind-noise. The cross-sectional area and volume of the cavity are larger respectively than the cumulative total cross-sectional area and volume of the apertures formed in the mouthpiece of the telephone transmitter. At least one of the apertures may be formed to serve a shielding function to prevent an air stream from directly blowing onto the vibrating membrane, thereby further reducing wind-noise pickup by the transmitter.
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Family
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Cited Art Landscape
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