MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Perforated steel panel, 1 1/2 pcf fiberglass backing, 2 inch thick, covered by 3/4 mil PVC
Flat Baf
PTB reference data
Original description
Perforated steel panel, 1 1/2 pcf fiberglass backing, 2 inch thick, covered by 3/4 mil PVC
Material properties
Manufacturer: Alpro Structural Systems Corp.
Thickness: 2 inches
Wall distance: 0 mm
Backing: 1 1/2 pcf fiberglass
Surface: covered by 3/4 mil PVC
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.80
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.60 | 0.95 | 1.00 | 0.80 | 0.60 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 2 inches · 1.5 lb/ft² · 0 | 0.80 | 0.44 | 0.62 | 0.94 | 0.99 | 0.79 | 0.59 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: