# Spherical Sound Propagation Calculator

The sound pressure in a spherical distance from a source with a known sound power can be calculated using the given Spherical Sound Propagation Calculator. For a spherical free field sound propagation, the decibel value of the sound pressure level is equal to the sound power level. All linear acoustic wave propagation can be seen as a superposition of spherical waves. Just input the required values in the Online calculator to calculate Sound Pressure at Spherical Free Field.

## Calculate Sound Pressure At Spherical Free Field

The sound pressure in a spherical distance from a source with a known sound power can be calculated using the given Spherical Sound Propagation Calculator. For a spherical free field sound propagation, the decibel value of the sound pressure level is equal to the sound power level. All linear acoustic wave propagation can be seen as a superposition of spherical waves. Just input the required values in the Online calculator to calculate Sound Pressure at Spherical Free Field.

Code to add this calci to your website

#### Spherical Sound Propagation Formula:

P = √ ((Qxρ x c x P _{ac}) / (4 x π x r^{2}))
**Where,**
P = Sound Pressure
Q = Directivity Factor
ρ = Density of Air
c = Speed of Sound
π = 3.14
P_{ac} = Sound Power
r = Distance From Source

#### Example

**Find the sound pressure at spherical free field having Q = 6, ρ = 35 kg/m**^{3}, c = 15 m/s, P_{ac} = 62 W, r = 9 m?

=(√((6x35x15x62))/(4xπx(9^2)))

The equivalent Spherical Free Field Pressure (P) is 0.4342 N/m^{2}.