WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Wood, sidewalls, 1 layer, 20 mm w/doors & lighting
PTB reference data
Original description
Wood, sidewalls, 1 layer, 20 mm w/doors & lighting
Material properties
Thickness: 20 mm
Application: sidewalls
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.13
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.20 | 0.10 | 0.10 | 0.05 | 0.05 |
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Method (354): Measured