OtherHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA 1968, Tabelle a3.2-14
Porous hard foil in trapezoidal profile on battening
PTB reference data
Original description
Porous hard foil in trapezoidal profile on battening
Material properties
Thickness: 1 mm
Wall distance: 200 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.65
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.65 | 0.85 | 0.65 | 0.75 | 0.75 |
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Method (354): Measured