MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Almute Type A300c porous sintered metal panel, 2 inch fiberglass backing
Type A300c – Almute
PTB reference data
Original description
Almute Type A300c porous sintered metal panel, 2 inch fiberglass backing
Material properties
Manufacturer: Peer
Thickness: 2.35 inch
Wall distance: 400 mm
Backing: 2 inch fiberglass
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
1.00
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.90 | 0.90 | 1.00 | 1.10 | 1.05 | 1.05 |
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Method (354): Measured