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JPS5885889

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DESCRIPTION JPS5885889
[0001]
Brief description of the drawings
[0002]
1 is a sectional view of a conventional electret condenser microphone, FIG. 2 is a sectional view
of an electret condenser microphone in one embodiment of the present invention, and FIG. is
there. 6 ... back electrode, 7 ... insulator, 9 ... electric impedance conversion element, 10 ... back
air chamber.
04-05-2019
1
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