TextileHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: COTTON3, C: Curtains, D: Cotton
Curtains, cotton cloth (0.33 kg/m²) folded to 7/8 area
PTB reference data
Original description
Curtains, cotton cloth (0.33 kg/m²) folded to 7/8 area
Material properties
Surface weight: 0.33 kg/m²
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.23
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.10 | 0.15 | 0.25 | 0.35 | 0.40 |
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Method (354): Measured