MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated steel panel with acoustic resonators
Silencio
PTB reference data
Original description
Perforated steel panel with acoustic resonators
Material properties
Manufacturer: Drupa
Thickness: 3 inches
Backing: acoustic resonators
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.53
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.15 | 0.45 | 0.90 | 0.90 | 0.75 |
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Method (354): Measured