TextileHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 6-4
Carpet, loop pile, on felt underlay
PTB reference data
Original description
Carpet, loop pile, on felt underlay
Material properties
Thickness: 5.3 mm
Surface weight: 1.98 kg/m²
Backing: felt underlay
Surface: waffle structure
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.47
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.10 | 0.30 | 0.70 | 0.90 | 0.75 |
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Method (354): Measured