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Microphone   Listen
noun
microphone  n.  (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. Note: The electrical signals produced in a microphone may be transmitted to recording or amplifying equipment through a conducting wire, or by transmission as radio waves. The latter method is popular for use in small mobile microphones used by performers in plays and other entertainment events, at public meetings, and by broadcast personnel.






Collaborative International Dictionary of English 0.48








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"Microphone" Quotes from Famous Books



... radio, airplane radio, control tower communication; (communication) 525, 527, 529, 531, 532; electronic devices (POINFO @.2.2.3.1.3.5.3). [devices for recording and reproducing recorded sound] phonograph, gramophone, megaphone, phonorganon[obs3]. [device to convert sound to electrical signals] microphone,directional microphone, mike, hand mike, lapel microphone. [devices to convert recorded sound to electronic signals] phonograph needle, stylus, diamond stylus, pickup; reading head (electronic devices). hearer, auditor, listener, eavesdropper, ...
— Roget's Thesaurus

... flaps of them down and furled them into five or six folds, and pressed them against the hearing-orifice—but it did no good: the faculty was so sharpened by nervous excitement that it was become a microphone and could hear through the ...
— Innocents abroad • Mark Twain

... to get his train of thought to focus once more on the submarine problem. But for some reason the business with the microphone and the speaker in the next room kept lingering in ...
— Tom Swift and the Electronic Hydrolung • Victor Appleton

... to tell of near-by vessels or shores. This signal arrangement includes a small tank on either side of the vessel, just below the water line. Within each is a microphone with wires leading to the bridge. If the vessel is near any other or approaching shore, the sounds; conveyed through the water from the distant object are heard through the receiver of the microphone. These arrangements are called the ship's ...
— Sinking of the Titanic - and Great Sea Disasters • Various

... chance the set was broken. He quickly twisted the transmitter to the frequency of his personal radio, then whistled in the microphone. The received signal was so loud that it hurt his ears. He tried to call Hys again, and was relieved to get a response ...
— Planet of the Damned • Harry Harrison

... and as soon as he was gone I turned to the microphone and called the sentry on duty ...
— Priestess of the Flame • Sewell Peaslee Wright

... and contraction of the material exposed to the beam, and that a real to-and-fro vibration of the diaphragm occurs capable of producing sonorous effects. It has occurred to me that Mr. Preece's failure to detect, with a delicate microphone, the sonorous vibrations that were so easily observed in our experiments, might be explained upon the supposition that he had employed the ordinary form of Hughes's microphone shown in Fig. 1, and that the vibrating area was confined to the central portion ...
— Scientific American Supplement, No. 288 - July 9, 1881 • Various



Words linked to "Microphone" :   bug, directional microphone, crystal microphone, mike, spike mike, capacitor microphone, cardioid microphone, electro-acoustic transducer, microphone boom



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