axis of acoustic symmetry
axis of acoustic symmetry[′ak·səs əv ə′kü·stik ′sim·ə·trē]
An axis such that the three-dimensional directivity pattern of a transducer may be generated by rotating a two-dimensional directivity pattern around it. Also known as acoustic axis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.