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.

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.

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.