class B push-pull sound track
class B push-pull sound track
[‚klas ′bē ¦pu̇sh ¦pu̇l ′sau̇n ‚trak] (engineering acoustics)
Two photographic sound tracks side by side, one of which carries the positive half of the signal only, and the other the negative half; during the inoperative half-cycle, each track transmits little or no light.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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