GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b2.2-3
Slotted drywall panel, 9.5 mm, 8% open area
PTB reference data
Original description
Slotted drywall panel, 9.5 mm, 8% open area
Material properties
Thickness: 9.5 mm
Wall distance: 200 mm
Perforation: 8%
Hole size: 2.5 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.55
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.85 | 0.70 | 0.55 | 0.40 | 0.30 |
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Method (354): Measured