Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 222
Optac Softac fiber absorber panel
Softac - panel
PTB reference data
Original description
Optac Softac fiber absorber panel
Material properties
Manufacturer: Optac
Thickness: 50 mm
Wall distance: 30 mm
Backing: 30 mm mineral wool
Surface: polyester non-woven
Up to fire class: not easily flammable
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.77
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.50 | 0.90 | 1.05 | 1.05 | 0.95 |
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| Compare | Value | |
|---|---|---|
| 50 mm + 30 mm Mineralwollhinterfütterung | αw0.77 | |
| 50 mm | αw0.46 |
Weight / density: 250 g / Stück
Dimensions: 500 x 500 x 50 mm
Distance: 30 mm