microphone

Definition of microphone

mi´cro`phone   Pronunciation: mī´krô`fōn
n.1.(Physics) An instrument for converting sounds into electrical signals, for the purpose of recording or amplifying the sounds. It produces its effects in various ways, as for example by the changes of intensity in an electric current, occasioned by the variations in the contact resistance of conducting bodies, especially of imperfect conductors, under the action of acoustic vibrations. Other forms of microphone may use changes in capacitance or other phenomena to transduce the sounds into electrical signals.

Related Words

bug, capacitor microphone, condenser microphone, crystal microphone, electro-acoustic transducer, mike, spike mike
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