Carbon Microphone

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Related to Carbon Microphone: movie camera, mimeograph

carbon microphone

[¦kär·bən ′mī·krə‚fōn]
(engineering acoustics)
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 It might be outdated or ideologically biased.

Carbon Microphone


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.
References in periodicals archive ?
Other inventions included the carbon microphone, which made practical telephony possible.
Hughes, who was reportedly born in Green y Ddwyryd, near Corwen, in 1831 (though there is debate as to whether it was really London), and whose family lived in Bala, was the inventor of the carbon microphone and the printed telegraph system.
They employed carbon microphones that were placed over the radial artery, and suffered from easy dislodgement (7,8).