WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, c1-19
Plywood panel, 6 mm, with 50 mm mineral fiber backing
PTB reference data
Original description
Plywood panel, 6 mm, with 50 mm mineral fiber backing
Material properties
Thickness: 6 mm
Wall distance: 100 mm
Dimensions: 3180 × 3180 mm
Surface weight: 4.2 kg/m²
Backing: 50 mm mineral fiber panels, 100 kg/m³
Flow resistance: 20 Rayl/cm
Mounting: 25/50 mm battens
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.22
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.30 | 0.10 | 0.05 | 0.05 | 0.05 |
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Method (354): Measured