Sound Absorption Calculator

Calculate the total sound absorption in a room: A = sum of (surface_area * absorption_coefficient) for all surfaces.

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m2
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Total Absorption

59.00 m2 Sabine

Average Absorption Coefficient0.2565

Total Absorption vs Surface 1 Area

Voir la formule →

Formule

## Room Sound Absorption Total absorption determines how quickly sound energy is removed from a room. ### Formula **A = sum(S_i * alpha_i)** - *S_i* = area of surface i - *alpha_i* = absorption coefficient (0 = perfect reflection, 1 = perfect absorption) This value feeds into the Sabine equation for reverberation time.

Exemple Résolu

Room with concrete walls (100 m2, alpha=0.05), carpet floor (80 m2, alpha=0.3), acoustic ceiling (50 m2, alpha=0.6).

  1. 01A = 100*0.05 + 80*0.3 + 50*0.6
  2. 02A = 5 + 24 + 30 = 59 m2 Sabine
  3. 03Average alpha = 59 / 230 = 0.257