Krešimirova 71, Starigrad 48000 Koprivnica, Croatia
info@sonitus.eu
Sound absorption coefficient αs
Red parts of the curves are not official ISO 354 measurements (bands below 100 Hz, measurements in the corner of the room).
| 50 Hz | 63 Hz | 80 Hz | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1 kHz | 1.25 kHz | 1.6 kHz | 2 kHz | 2.5 kHz | 3.15 kHz | 4 kHz | 5 kHz | αw | Class | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Direct mounting | 0.17 | 0.48 | 0.80 | 0.66 | 0.85 | 0.99 | 0.88 | 0.96 | 0.98 | 0.90 | 0.84 | 0.81 | 0.73 | 0.72 | 0.62 | 0.54 | 0.53 | 0.49 | 0.46 | 0.45 | 0.41 | 0.55 | D |
| Direct mounting · measured in the corner of the reverberation room | 0.54 | 0.67 | 1.00 | 1.00 | 1.00 | 1.00 | 0.92 | 1.00 | 1.00 | 1.00 | 1.00 | 0.89 | 0.84 | 0.72 | 0.62 | 0.50 | 0.50 | 0.48 | 0.38 | 0.38 | 0.34 | – | – |
ISO 354 – Institut IGH, Zagreb, test report EN-2160/060/15-103/15, 2015-12-21 (100–5000 Hz). Bands below 100 Hz are outside the ISO 354 range.
Corner measurement: the same reverberation room, the absorbers placed in the corners – not an ISO 354 measurement.
Tell us where you want to use it and we will recommend the right setup.
