capacitor microphone


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Related to capacitor microphone: condenser microphone, crystal microphone, Electret microphone

capacitor microphone

[kə′pas·əd·ər ′mī·krə‚fōn]
(engineering acoustics)
A microphone consisting essentially of a flexible metal diaphragm and a rigid metal plate that together form a two-plate air capacitor; sound waves set the diaphragm in vibration, producing capacitance variations that are converted into audio-frequency signals by a suitable amplifier circuit. Also known as condenser microphone; electrostatic microphone.