TextileHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 1105 )
Cotton curtains (0.5 kg/m²) draped to 3/4 area approx. 130 mm from wall
PTB reference data
Original description
Cotton curtains (0.5 kg/m²) draped to 3/4 area approx. 130 mm from wall
Material properties
Wall distance: 130 mm
Surface weight: 0.5 kg/m²
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.54
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.15 | 0.20 | 0.20 | 0.20 | 0.25 |
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Method (354): Measured