Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 160
Wilhelmi Mikropor acoustic foil Type V
Wilhelmi-Akustikplatte – Mikropor, Akustik-Folie Type V (1981)
PTB reference data
Original description
Wilhelmi Mikropor acoustic foil Type V
Material properties
Manufacturer: Wilhelmi Werke AG
Thickness: 1 mm (foil), 40 mm (web height)
Wall distance: 10 mm, 200 mm
Surface: trapezoidal profile
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.66
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.65 | 0.85 | 0.65 | 0.75 | 0.75 |
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| Compare | Value | |
|---|---|---|
| 200 mm | αw0.66 | |
| 10 mm | αw0.43 |
Dimensions: 1250 x 2500 mm