An example of microphone is something a singer sings into so people in the back row can hear him. At first it was usual to join the microphone transmitter in the direct circuit.
He wore headphones and spoke into a microphone , simultaneously responding to half a dozen chat windows open on this computer. Hughes invented the microphone , but did not apply for letters patent. Another type of microphone which was used in Europe much more than in the United States was the multiple-contact instrument.
Instead, it is placed near where the string is plucked and a small microphone picks up the sound. All rights reserved. Filters 0. A better alternative might have been megaphone entry 1 , coined centuries later. Marsh's microphone was a more or less theoretical device, and the word, which occurs sporadically thereafter, might have passed into oblivion.
It was taken up again, however, by the British inventor Charles Wheatstone , who described a purely acoustic device for transmitting sound as a microphone "Experiments on Audition," The Quarterly Journal of Science, Literature and Art, July to December, , p. Our team at The Usage has selected the best computer microphones of See more words from the same year. Accessed 11 Nov. More Definitions for microphone.
See the full definition for microphone in the English Language Learners Dictionary. Nglish: Translation of microphone for Spanish Speakers. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
A high-sensitivity microphone picks up even the slightest sound and can record and analyze noise to determine sleep quality. She found a way to make little kitten steps to the microphone in unison with the music. Both get electronics, but the proffered image for boys is a microphone ; for girls, a radio. Yeah, having a microphone and so many people under your control always frightened me.
Barrett had chanced to place a paternal hand on her head as he passed the microphone to the student next to her. After about one minute of rambling, a woman runs up on stage and directs someone to turn his microphone off. Most microphones today use electromagnetic induction, capacitance change, piezoelectric generation, or light modulation to produce an electrical voltage signal from mechanical vibration.
An apparatus which includes a contact of variable resistance; such resistance can be varied in amount by slight vibrations, such as those produced by sound waves. The apparatus in use forms part of a circuit including a telephone and current generator. As the contact is varied the resistance of the circuit and consequently the current intensity changes and sounds are emitted by the telephone corresponding to such changes.
If the microphone is spoken to, the telephone will emit corresponding sounds, reproducing the voice. It has been found in practice that carbon gives the best microphone contact. One of the simplest and earliest forms is shown in the cut. A short rod or pencil of carbon, A, such as used in batteries, is sharpened at the ends and rests loosely in a vertical position between two blocks of carbon, C C, in each of which a hole is drilled to receive one of the points.
The blocks are carried on a standard and base D. The blocks are connected with two terminals x, y, of a circuit, including a telephone and battery. There are two contacts to be disturbed. If delicately adjusted a fly walking over the base-board will disturb the contacts enough to produce sounds in the telephone. These sounds are possibly not due only to sound waves, but in part to absolute mechanical disturbances.
The various forms of telephone transmitter are generally microphones. The microphone symbol -- In this Symbols. Electro-acoustic Transducer. Stutchman Forensic Lab in California :. She was clutching a doll, she couldn't see over the microphone at the respondent's table, and she couldn't answer the questions, she was afraid, as she was done, the judge asked in Spanish what the name of her doll was, and she answered' baby, baby doll' in Spanish.
And that was it. Nancy Pelosi came in last among the 15 politicians, with a For example, some errors occurred because the Trint system missed words that were spoken away from the microphone.
When you get this microphone in your hands, you will feel an indescribable, yet undeniable, gravitational-like pull to give a speech. We're doing our best to make sure our content is useful, accurate and safe. If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly.
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