Radio Broadcasting, Technology Of - Research Article from Encyclopedia of Communication and Information

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Microphones

There are a number of tools used to introduce various signals into a broadcast system, and the microphone remains one of the most basic of these input tools in use in radio. The microphone is an instrument used to transduce, or convert, acoustic energy into electric energy. During this process, sound waves are changed into electricity that can then be sent through wires as variations in voltage. There are three types of microphones that are preferred by professionals: moving coil, ribbon, and condenser. These are also often referred to as dynamic, velocity, and capacitor microphones, respectively. Each produces the waveforms that are required for transmission in a different manner.

The moving-coil, or dynamic, microphone is the most widely used due primarily to its durable and rugged design and good frequency response to voices and most music. In this microphone, a flexible membrane, called the diaphragm...

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This section contains 2,471 words
(approx. 9 pages at 300 words per page)
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Radio Broadcasting, Technology Of from Encyclopedia of Communication and Information. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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