FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 109
Grohmann atona polystyrene sound-absorbing panel
atona sound-absorbing panel
PTB reference data
Original description
Grohmann atona polystyrene sound-absorbing panel
Material properties
Manufacturer: Gebr.Grohmann GmbH & Co
Thickness: 20 mm, 10 mm
Wall distance: 40 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.57
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.25 | 0.60 | 0.85 | 0.80 | 0.80 |
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| Compare | Value | |
|---|---|---|
| 20 mm | αw0.57 | |
| 10 mm | αw0.39 |
Dimensions: 496 x 496 mm
Distance: 40 mm