WoodBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter http://www.lignoform.com, Feb. 01
Lignoform Perfoplatte 16/16 blind hole 12/3 (ball-impact resistant)
Lignoform Perforated Panel, Perfoplatte 16/16 blind hole 12/3
PTB reference data
Original description
Lignoform Perfoplatte 16/16 blind hole 12/3 (ball-impact resistant)
Material properties
Manufacturer: Lignoform Benken AG
Thickness: 18 mm
Wall distance: 350 mm
Backing: acoustic non-woven
Application: gymnasium walls
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.59
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.75 | 0.85 | 0.75 | 0.40 | 0.15 |
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Method (354): Measured
