FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 109
Value from the PTB table, not verified
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
0.55
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 | αw0.55 | |
| 10 mm | αw0.35 |
Dimensions: 496 x 496 mm
Distance: 40 mm
Measured values as a table (2 measurements)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · 40 mm | 0.55 | 0.03 | 0.06 | 0.12 | 0.15 | 0.23 | 0.39 | 0.50 | 0.57 | 0.79 | 0.95 | 0.86 | 0.76 | 0.75 | 0.82 | 0.85 | 0.81 | 0.85 | 0.80 | 0.70 |
| 10 mm · 0,2 kg / m² · 40 mm | 0.35 | 0.08 | 0.06 | 0.06 | 0.05 | 0.12 | 0.15 | 0.25 | 0.32 | 0.43 | 0.61 | 0.73 | 0.80 | 0.69 | 0.60 | 0.53 | 0.51 | 0.48 | 0.62 | 0.77 |
Measured values as a table (2 measurements)
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