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Technical Specifications for Acoustic Curtain
Sound absorption coefficient according to ISO 354
Measurement of sound absorption in a reverberated room
| Frequency f(Hz) | Alpha s(third octave) |
| 100 | 0.14 |
| 125 | 0.15 |
| 160 | 0.21 |
| 200 | 0.42 |
| 250 | 0.58 |
| 315 | 0.81 |
| 400 | 1.06 |
| 500 | 1.11 |
| 630 | 0.98 |
| 800 | 0.71 |
| 1000 | 0.51 |
| 1250 | 0.34 |
| 1600 | 0.25 |
| 2000 | 0.19 |
| 2500 | 0.16 |
| 3150 | 0.14 |
| 4000 | 0.11 |
| 5000 | 0.10 |
Transmission Loss according to ISO 140-3
Laboratory measurement of airborne sound insulation of building elements
| Frequency f(Hz) | R (third octave)dB |
| 100 | 5.0 |
| 125 | 12.2 |
| 160 | 6.3 |
| 200 | 19.5 |
| 250 | 8.8 |
| 315 | 19.0 |
| 400 | 23.7 |
| 500 | 24.9 |
| 630 | 31.2 |
| 800 | 33.9 |
| 1000 | 34.1 |
| 1250 | 41.2 |
| 1600 | 45.4 |
| 2000 | 43.5 |
| 2500 | 46.7 |
| 3150 | 45.5 |
| 4000 | 44.4 |
| 5000 | 44.8 |
For further information please contact our Noise Control Team on 0845 363 7131 or by email at tech@soundservice.co.uk
Every effort is made to ensure the information given here is accurate and reliable but is to be used only as guidance. As each application can be different, users are advised to conduct their own tests to confirm suitability. As our policy is one of continuous development and improvement, we reserve the right to make changes without prior notice.
