Sound Energy Density

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Sound Energy Density

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At a point in a sound field, the sound energy contained in a given infinitesimal part of the medium divided by the volume of that part of the medium. </dd>
The terms instantaneous energy density, maximum energy density, and peak energy density have meanings analogous to the related terms used for sound pressure. In speaking of average energy density in general, it is necessary to distinguish between the space average (at a given instant) and the time average (at a given point). </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use