Sound Wave Equations Formulas Calculator

Science Physics

Solving For Sound Intensity Level

Inputs:

 sound intensity (I) watt foot-pound/second horsepower joule/second kilojoule/second kilowatt newton-meter/second reference or least audible intensity (I0) watt foot-pound/second horsepower joule/second kilojoule/second kilowatt newton-meter/second

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Conversions:

 sound intensity (I) = 0 = 0 watt reference or least audible intensity (I0) = 0 = 0 watt

Solution:

 sound intensity level (IL) = HAS NOT BEEN CALCULATED

Other Units:

Change Equation
Select an equation to solve for a different unknown

 sound pressure level sound pressure reference pressure sound intensity level sound intensity reference intensity intensity at a distance from point source distance from sound source power emitted wave frequency wave velocity wavelength noise pollution level NPL

Where
 SPL = sound pressure level, decibels (db) P = sound wave pressure, newtons/meter2 Pref = reference pressure or hearing threshold, newton/meter2 IL = intensity level, decibel (db) I = sound intensity, watt I0 = reference intensity or least audible sound level, watts PAV = average power, watt NPL = noise pollution level, decibel (db)

Notes:
- Usually, I0 is set to 10-12 watts
- Usually, Pref is set to 0.00002 newtons/meter2
References - Books:

1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.
2) Tipler, Paul A.. 1995. Physics For Scientists and Engineers. Worth Publishers. 3rd ed.

by Jimmy Raymond