WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe im Internet, mit Verweis auf ita-Prüfzeugnis, 14.11.2000
Wilhelmi Variante X wood acoustic panel, fine chipboard facing
Variante X
PTB reference data
Original description
Wilhelmi Variante X wood acoustic panel, fine chipboard facing
Material properties
Manufacturer: Wilhelmi Werke AG
Wall distance: 50 mm
Surface: decorative fine chipboard facing, natural or color-coated
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.57
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.50 | 0.65 | 0.70 | 0.70 | 0.60 |
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Method (354): Measured