Boundary microphone
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Mar 23, 2016
filing date -
Mar 26, 2015
priority date (Note) -
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Abstract
A boundary microphone is provided that does not generate spark discharge during an operation of a switch. The boundary microphone includes a microphone unit 6, and a switching unit (a button 4, a tube 9, a detector 10, a comparator, and a switching circuit) that switches turning-on or turning-off of output signals from the microphone unit 6, wherein the switching unit (the button 4, the tube 9, the detector 10, the comparator, and the switching circuit) includes an air chamber 9 and a controller that controls the turning-on or turning-off based on the air pressure inside the air chamber 9.
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