acoustical scintillation

acoustical scintillation

[ə′küs·tə·kəl sin·tə′lā·shən]
(communications)
Irregular fluctuation in the received intensity of sounds propagated through the atmosphere from a source of uniform output; produced by nonhomogeneous structure of the atmosphere along the path of the sound.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.