FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: FOAMPLASTIC2, C: Misc, D: Porous
Misc, porous foam plastic 20 mm
PTB reference data
Original description
Misc, porous foam plastic 20 mm
Material properties
Thickness: 20 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.50
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.05 | 0.35 | 0.70 | 0.95 | 0.90 |
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Method (354): Measured