Sound Absorption Coefficient Calculator
Free calculate acoustic absorption coefficient from incident and absorbed sound energy. determine α = 1 - r for materials.
Input Parameters
J
J
0 to 1 (0 = no reflection, 1 = total reflection)
Results
Enter parameters to calculate absorption coefficient
Sound Absorption Coefficient Formula
From Energy
α = E_a / E_i
Where:
- • α = absorption coefficient (0-1)
- • E_a = absorbed energy
- • E_i = incident energy
From Reflection
α = 1 - R
Where R is reflection coefficient
Typical Values
- • Concrete: 0.02-0.1
- • Carpet: 0.3-0.6
- • Acoustic foam: 0.7-0.95