loudness analyzer

loudness analyzer

[′lau̇d·nəs ‚an·ə‚līz·ər]
(electronics)
An instrument that produces a cathode-ray display which shows the loudness of airborne sounds at a number of subdivisions of part or all of the audio spectrum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.