StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 224
Polyklet Akustikstein Type F1/F2 with mineral fiber backing
Polyklet Akustikstein – Type F1, F2
PTB reference data
Original description
Polyklet Akustikstein Type F1/F2 with mineral fiber backing
Material properties
Manufacturer: Polyklet-Akustik
Thickness: 60 mm
Wall distance: 50 mm
Perforation: 47%
Backing: 30 mm mineral fiber panel
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.67
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.50 | 0.85 | 0.75 | 0.85 | 0.75 |
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Method (354): Measured