sound pressure

sound pressure

n.

The varying difference, at a fixed point in a given medium, between the pressure caused by a sound wave and either atmospheric pressure or the average pressure of the medium.

Thesaurus

Noun

1.

sound pressure - the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point instantaneous sound pressure force per unit area, pressure, pressure level - the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit); "the compressed gas exerts an increased pressure"