MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Perforated steel panel backed by 4 inch layer of 2 pcf OCF Type R-23 Fiberglas
PTB reference data
Original description
Perforated steel panel backed by 4 inch layer of 2 pcf OCF Type R-23 Fiberglas
Material properties
Manufacturer: Commercial Acoustics
Thickness: 4 1/4 inch
Wall distance: 0 mm
Density: 2 pcf
Backing: 4 inch layer of 2 pcf OCF Type R-23 Fiberglas
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
1.05
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.85 | 1.10 | 1.20 | 1.05 | 1.05 | 1.05 |
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Method (354): Measured
