Power, Acoustic


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Power, Acoustic

 

the energy carried by a sound wave through a particular surface per unit time; it is measured in watts. A distinction is made between the instantaneous value of acoustic power and the average over the period of an oscillation or a prolonged time interval. Of greatest interest is the average acoustic power per unit area, which is called the sound intensity.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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