GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 203
Knauf Perlgips perforated gypsum board, staggered perforation 12/20/46
Perlgips perforated gypsum board – staggered perforation 12/20/46
PTB reference data
Original description
Knauf Perlgips perforated gypsum board, staggered perforation 12/20/46
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 9.5 mm
Wall distance: 53 mm
Perforation: 12.6 %
Hole size: 12 mm, 20 mm
Backing: Paratex non-woven and 20 mm mineral fiber mat
Application: Helmholtz absorber
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.56
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.45 | 0.85 | 0.80 | 0.60 | 0.50 |
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Method (354): Measured
