Free Sound Absorption Calculator
Calculate the total sound absorption in a room: A = sum of (surface_area * absorption_coefficient) for all surfaces.
m2
m2
m2
Total Absorption
59.00 m2 Sabine
Average Absorption Coefficient0.2565
Total Absorption vs Surface 1 Area
Room Sound Absorption
Total absorption determines how quickly sound energy is removed from a room.
Formula
A = sum(S_i * alpha_i)
This value feeds into the Sabine equation for reverberation time.
Example Calculation
Room with concrete walls (100 m2, alpha=0.05), carpet floor (80 m2, alpha=0.3), acoustic ceiling (50 m2, alpha=0.6).
- 01A = 100*0.05 + 80*0.3 + 50*0.6
- 02A = 5 + 24 + 30 = 59 m2 Sabine
- 03Average alpha = 59 / 230 = 0.257
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