WoodBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, c1-18
Plywood panels with mineral fiber backing
PTB reference data
Original description
Plywood panels with mineral fiber backing
Material properties
Thickness: 6 mm
Wall distance: 50 mm
Dimensions: 3180 x 3180 mm (test area), 500 x 1000 mm (cassette pattern)
Surface weight: 4.2 kg/m²
Backing: 50 mm mineral fiber panels, 100 kg/m³
Mounting: 25/50 mm battens
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.21
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.35 | 0.15 | 0.05 | 0.05 | 0.05 |
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Method (354): Measured