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Microphone - Dictionary Definition and Overview |
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Microphone : (noun)
1: device for converting sound waves into electrical energy
[syn: mike]
Based on WordNet 2.0
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Microphone : \Mi"cro*phone\, n. [Micro- _ Gr. ? sound, voice: cf.
F. microphone.] (Physics)
An instrument for intensifying and making audible very feeble
sounds. It produces its effects 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.
Based on Webster's Revised Unabridged Dictionary
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Microphone :
Any electromechanical device designed to
convert sound into an electrical signal.
A microphone converts an acoustic waveform consisting of
alternating high and low air pressure travelling through the
air into a voltage. To do this it uses some kind of pressure
or movement sensor. The simplest kind of microphone is
actually very similar in construction to a loudspeaker.
The analogue electrical signal can be fed into a computer's
sound card where it is amplified and sampled to convert it
into a digital waveform for storage or transmission.
(2002-11-04)
Based on Webster's Revised Unabridged Dictionary (1913)
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