WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, c1-20
Plywood panels with mineral fiber filling on sub-frame
PTB reference data
Original description
Plywood panels with mineral fiber filling on sub-frame
Material properties
Thickness: 6 mm
Wall distance: 100 mm
Surface weight: 4.2 kg/m²
Density: 100 kg/m³
Backing: mineral fiber panels
Flow resistance: 2 kPa·s/m
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 | 0.60 | 0.40 | 0.20 | 0.10 | 0.05 | 0.10 |
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Method (354): Measured