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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



... 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 ...
— Tom Swift and the Electronic Hydrolung • Victor Appleton

... I countered. It wouldn't have taken a microphone, I suppose, to discover the hostility in my tone. "And would it be going too far to inquire just where you were?" I continued as I saw he had no intention ...
— The Prairie Mother • Arthur Stringer

... a 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

... collection of experiments, described with just the right amount of abstract information and no more, and placed in progressive order. The recent inventions of the phonograph and microphone lend an extraordinary interest to this whole field of experiment, which makes Professor Mayer's manual ...
— Freedom in Science and Teaching. - from the German of Ernst Haeckel • Ernst Haeckel

... the microphone and headed for the door. Halfway there, however, he stopped. He hadn't had any tequila in a long time, and he thought he owed it to himself. He felt he had come out ahead in his exchange with Lynch, and ...
— The Impossibles • Gordon Randall Garrett

... passed from Holborn into Cheapside, which was impassable, unless I crawled, was about to turn, when I noticed a phonograph-shop: into this I got by a side-door, suddenly seized by quite a curiosity to hear what I might hear. I took a good one with microphone diaphragm, and a number of record-cylinders in a brass-handled box, and I put them into the car, for there was still a very strong peach-odour in this closed shop, which displeased me. I then proceeded southward and westward through by-streets, seeking ...
— The Purple Cloud • M.P. Shiel

... engraving the microphone-telephone constructed by Messrs. Mix & Genest, of Berlin, which, after extended trials, has been adopted in preference to others by the imperial postal department of Germany. There are now more than 5,000 of these instruments in use, and we need scarcely mention ...
— Scientific American Supplement, No. 620, November 19,1887 • Various

... continued, "the fact that the electric arc is sensitive to such small variations in the current over a wide range of frequency has suggested that a direct-current arc might be used as a telephone receiver. All that is necessary is to superimpose a microphone current on the main arc current, and the arc reproduces sounds and speech distinctly, loud enough to be heard several feet. Indeed, the arc could be used as a transmitter, too, if a sensitive receiver replaced the ...
— The Dream Doctor • Arthur B. Reeve

... and when the end of the telephone was applied to a microphone the room fairly rang with exultant cheers, and those looking through a kintograph (visual telegraph) terminating in a camera obscura on the shores of Baffin Bay were able to see engineers and workmen waving and throwing up their ...
— A Journey in Other Worlds - A Romance of the Future • John Jacob Astor

... a microphone—the big one they just erected near the instrument room. There's something coming! That's the magnified sound of some distant rush of air. Very faint sound, but they must have heard it on the ear-phones long ago. That microphone must ...
— Tarrano the Conqueror • Raymond King Cummings

... cubicle behind the pilot's compartment, with all kinds of maps and rulers and things. He keeps bent low over a welded-to-the-wall (they call it the bulkhead, for some reason or other) table, scratching away with a ballpoint pen on the maps, and now and then calling numbers over a microphone to the pilot. His hair is red and curly, and he looks as though he'd be tall if he ever gets to stand up. There are freckles on the backs of his hands, so I think he's probably got them on his face, too. So far, all he's ...
— The Dope on Mars • John Michael Sharkey

... The sensitive microphone in the tip of his thumb picked up the nearly inaudible sounds; the speaker in his middle finger vibrated against his skull and brought him the answer ...
— The Unnecessary Man • Gordon Randall Garrett

... 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, ...
— Roget's Thesaurus

... impressions even to imagine the causes which guide the creature. There is, in certain events, another world of the senses in which our organs perceive nothing, a world which is closed to us. The eye of the camera sees the invisible and photographs the image of the ultra-violet rays; the tympanum of the microphone hears what to us is silence. A scientific toy, a chemical contrivance surpass us in sensibility. Would it be rash to attribute similar faculties to the delicate organization of the insect, even with regard to agencies unknown ...
— The Glow-Worm and Other Beetles • Jean Henri Fabre



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



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