The instantaneous sound pressure is the deviation from the local ambient pressure caused by a sound wave at a given location and given instant in time.
The effective sound pressure is the root mean square of the instantaneous sound pressure over a given interval of time (or space).
Total pressure is given by:
where:
- = local ambient atmospheric (air) pressure,
- = sound pressure deviation.
Read more about this topic: Sound Pressure
Famous quotes containing the words sound and/or pressure:
“Every now and then, when you’re on stage, you hear the best sound a player can hear. It’s a sound you can’t get in movies or in television. It is the sound of a wonderful, deep silence that means you’ve hit them where they live.”
—Shelley Winters (b. 1922)
“Amid the pressure of great events, a general principle gives no help.”
—Georg Wilhelm Friedrich Hegel (1770–1831)