WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerunterlagen
ESO-Akustik Modulator 22/3 ceiling facing, plywood strips
ESO MODULATOR 22/3
PTB reference data
Original description
ESO-Akustik Modulator 22/3 ceiling facing, plywood strips
Material properties
Manufacturer: ESO-Akustik Brigitte Schmelzle
Thickness: 4 mm
Wall distance: 200 mm (filled), 50 mm (filled)
Dimensions: 22 mm wide plywood strips, 3 mm spacing
Backing: non-woven fiber 0.02 kg/m², 40 mm mineral wool 0.6 kg/m²
Application: ceiling facing
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 | 0.30 | 0.65 | 0.80 | 0.75 | 0.70 | 0.60 |
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| Compare | Value | |
|---|---|---|
| 200 mm (gefüllt) | αw0.66 | |
| 50 mm (gefüllt) | αw0.56 |
Application: Holzrahmenkonstruktion
