optical microphone

optical microphone

[¦äp·tə·kəl ′mī·krə‚fōn]
(engineering acoustics)
A microphone in which the motion of a membrane is detected using a light beam reflected from it, either with the aid of an interferometer or by detecting the deflection of the beam.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Integration of the Phone-Or BNS system optical microphone into Motorola Telematics systems will enhance voice recognition capabilities in the automobile, thereby improving the in-car communications experience.
Other new providers include: Single Quantum (A2, 511), which develops superconducting nanowire single-photon detectors; and Xarion (A2, 132), offering optical microphones for industrial process control and machine monitoring.