Reverberation time
Acoustic Calculator
Size the room, pick the surfaces, and see what treatment does to reverberation time.
1
The room
Areas and volume are derived as you type.
m
m
m
m
- Volume
- 0 m³
- Floor
- 0 m²
- Walls
- 0 m²
- Ceiling
- 0 m²
2
Surfaces
Add treatment to a surface and its area is deducted from the base finish automatically.
Ceiling
Usually where treatment goes first
m²
Absorption coefficient per octave band
Treatment
m²
Walls
Total wall surface
m²
Absorption coefficient per octave band
Treatment
m²
Floor
Soft finishes absorb the top bands
m²
Absorption coefficient per octave band
Doors
Deducted from the wall area
m²
Absorption coefficient per octave band
Windows
Deducted from the wall area
m²
Absorption coefficient per octave band
Optional. Add their area if you know it, and it comes off the wall total so nothing is counted twice.
People and furnishings
A full room is quieter than an empty one. Leave these alone to calculate the room bare.
3
Result
Enter the room dimensions to see results.
Untreated
–
T mid, seconds
With treatment
–
T mid, seconds
| Octave band | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|
Notes on the room
Get this calculation by email
We will send the full band-by-band breakdown, and our specialists can review the room with you.
- Reverberation time band by band, treated and untreated
- Every surface, material and treated area itemised
- The formula and the assumptions behind the figures
Results are indicative. Reverberation time is calculated from published absorption coefficients using the Eyring formula. For a binding figure, ask for a measured acoustic report.