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carbon microphone[¦kär·bən ′mī·krə‚fōn]
A microphone in which a flexible diaphragm moves in response to sound waves and applies a varying pressure to a container filled with carbon granules, causing the resistance of the microphone to vary correspondingly.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a microphone in which carbon granules are used to convert sound vibrations into electrical variations. Carbon microphones are distinguished from other microphone systems by their extremely high sensitivity and their simplicity of design; their quality characteristics, however, are poor. The microphones are used primarily in telephony.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.