WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerunterlagen
ESO MODULATOR 22/3 plywood ceiling facing with mineral wool
ESO MODULATOR 22/3
PTB reference data
Original description
ESO MODULATOR 22/3 plywood ceiling facing with mineral wool
Material properties
Manufacturer: ESO-Akustik Brigitte Schmelzle
Thickness: 5 mm
Wall distance: 200 mm (filled), 50 mm (filled)
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.22
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.25 | 0.15 | 0.10 | 0.10 | 0.20 |
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| Compare | Value | |
|---|---|---|
| 200 mm (gefüllt) | αw0.22 | |
| 50 mm (gefüllt) | αw0.22 |
Application: Holzrahmenkonstruktion