double-button microphone

double-button microphone

[¦dəb·əl ¦bət·ən ′mī·krə‚fōn]

(engineering acoustics)

A carbon microphone having two carbon-filled buttonlike containers, one on each side of the diaphragm, to give twice the resistance change obtainable with a single button. Also known as differential microphone.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.