WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Wood ceiling, 2 layers, 28 mm w/lighting & ventilation
PTB reference data
Original description
Wood ceiling, 2 layers, 28 mm w/lighting & ventilation
Material properties
Thickness: 28 mm
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.11
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.15 | 0.10 | 0.10 | 0.05 | 0.05 |
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Method (354): Measured