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microphone

 - 5 dictionary results

mi⋅cro⋅phone

[mahy-kruh-fohn]
–noun
an instrument capable of transforming sound waves into changes in electric currents or voltage, used in recording or transmitting sound.

Origin:
1875–80; micro-, in sense “enlarging” (extracted from microscope ) + -phone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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mi·cro·phone   (mī'krə-fōn')   
n.  An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.
mi'cro·phon'ic (-fŏn'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

microphone 
coined from Gk. mikros "small" + phone "sound" (see fame). Modern meaning dates from 1929, from use in radio broadcasting and movie recording. Earlier, "telephone transmitter" (1878) and "ear trumpet for the hard-of-hearing" (1683). Of the two spellings of the short form of the word, mike (1927) is older than mic (1961).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: mi·cro·phone
Pronunciation: 'mI-kr&-"fOn
Function: noun
: an instrument whereby sound waves are caused to generate or modulatean electric current usually for the purpose of transmitting or recording sound (as speech or music)
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Computing Dictionary

microphone hardware, audio
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)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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