Sound Pressure To Sound Intensity Calculator

The Sound Pressure is also referred to as acoustic pressure. It is defined as the deviation of local pressure from the ambient atmospheric pressure caused by sound waves. The Sound intensity, also known as acoustic intensity is defined as the sound power per unit area. It's SI unit is watt per square metre (W/m2). The below online Sound Pressure To Sound Intensity Calculator helps you to convert sound pressure level (SPL) to the equivalent sound intensity (dB).

Pa
W/m2

The Sound Pressure is also referred to as acoustic pressure. It is defined as the deviation of local pressure from the ambient atmospheric pressure caused by sound waves. The Sound intensity, also known as acoustic intensity is defined as the sound power per unit area. It's SI unit is watt per square metre (W/m2). The below online Sound Pressure To Sound Intensity Calculator helps you to convert sound pressure level (SPL) to the equivalent sound intensity (dB).

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Formula:

Sound Intensity = (Sound Pressure)2 / 400

Example:

Calculate the equivalent sound intensity of a sound pressure 18 Pa?

Solution

Sound intensity =18 x 18 / 400 Watt Per Square Metre
= 0.81 W/m2

The human ear can detect sound intensity levels as low as 0.000000000001 Watt. The unit of sound pressure is Pascal (Pa) and it is used for the measurement of noise in the air from the listener's location.


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