GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 206
Knauf Perlgips perforated gypsum tile with mineral fiber, 8 mm holes
Perlgips-Kassette gelocht – 4520 01-06 Lochung 8/18
PTB reference data
Original description
Knauf Perlgips perforated gypsum tile with mineral fiber, 8 mm holes
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 9.5 mm
Wall distance: 53 mm, 500 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.65
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.80 | 0.60 | 0.65 | 0.65 | 0.60 | 0.45 |
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| Compare | Value | |
|---|---|---|
| 500 mm | αw0.65 | |
| 53 mm | αw0.60 |
Dimensions: 625 x 625 mm
