instantaneous sound pressure


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Noun1.instantaneous sound pressure - the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point
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"
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* P(t) is the instantaneous sound pressure of the sound signal

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