GypsumLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, c1-9
Drywall, 12.5 mm, 11 kg/m², on 24/48 mm sub-frame, 400 mm wall distance, empty
PTB reference data
Original description
Drywall, 12.5 mm, 11 kg/m², on 24/48 mm sub-frame, 400 mm wall distance, empty
Material properties
Thickness: 12.5 mm
Wall distance: 400 mm
Dimensions: 1500 × 1250 mm
Surface weight: 11 kg/m²
Mounting: on 24/48 mm sub-frame, 420 mm grid
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.06
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.10 | 0.05 | 0.05 | 0.05 | 0.05 |
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Method (354): Measured