PlasticHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: J.Meyer, Kirchenakustik, Verlag E.Bochinsky
Microporous single-layer foil roller blind, 5 cm air cavity
PTB reference data
Original description
Microporous single-layer foil roller blind, 5 cm air cavity
Material properties
Wall distance: 5 cm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.31
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.05 | 0.25 | 0.65 | 0.55 | 0.30 |
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Method (354): Measured