Practical sound absorption coefficient (αp)
| Hz | 125 | 250 | 500 | 1000 | 2000 | 4000 | αw | Class |
|---|---|---|---|---|---|---|---|---|
| 30 mm | 0.05 | 0.30 | 0.75 | 0.80 | 0.90 | 0.85 | 0.80 | B |
| 50 mm | 0.20 | 0.75 | 0.90 | 1.00 | 1.00 | 1.00 | 1.00 | A |
| 80 mm | 0.45 | 0.95 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | A |
Need help choosing the right solution? Our acoustic consultants will recommend, supply and install the right system for your project.

Circular sound-absorbing panels with a clear rectangular cross-section, designed for high absorption across the sound spectrum while visually and acoustically enhancing personal workspaces.

Wave-shaped acoustic clouds with a unique concave and convex design, inspired by ocean waves. Framed in steel and wrapped in acoustically transparent fabric to maximise absorption in specific acoustic ranges.

Sound-absorptive acoustic partitions with squared edges designed for office desks — a flexible solution to acoustic problems in open-plan offices that improves the working environment.