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Acoustic measurements
Relative sound pressure level
relative level of sound pressure
ΔL =
dB
x
dB
B
maximal sound pressure of 1st sound source
p
m1
=
Pa
x
μPa
mPa
Pa
kPa
MPa
GPa
bar
kgf/cm
2
mm H
2
O
mm Hg
maximal sound pressure of 2nd sound source
p
m2
=
Pa
x
μPa
mPa
Pa
kPa
MPa
GPa
bar
kgf/cm
2
mm H
2
O
mm Hg
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"