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.