WoodBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 84
Deweton acoustic panel Type D (Helmholtz resonator), 4 mm slots
PTB reference data
Original description
Deweton acoustic panel Type D (Helmholtz resonator), 4 mm slots
Material properties
Manufacturer: Danzer Furnierwerke GmbH
Thickness: 25 mm
Wall distance: 30 mm
Perforation: 4 mm wide slots on visible side at 34 mm spacing
Hole size: 12 mm diameter (tube)
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.47
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.20 | 0.25 | 0.55 | 1.00 | 0.65 |
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| Compare | Value |
|---|---|
| αw0.47 | |
| αw0.47 | |
| αw0.34 |
Weight / density: 11 kg / m²
Dimensions: width 604 mm, Längen: 604 mm, 1212 mm, 1820 mm, 2500 mm, 3000 mm.
Application: Wand- and Deckenplatte
Distance: 30 mm
