MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Porous sintered metal panel
Type A300c – Almute
PTB reference data
Original description
Porous sintered metal panel
Material properties
Manufacturer: Peer
Thickness: 3 mm
Wall distance: 200 mm, 400 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.85
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.95 | 0.90 | 0.60 | 0.75 | 0.90 | 1.05 |
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| Compare | Value | ||
|---|---|---|---|
| 0.8 lb/ft² | 400 mm | αw0.85 | |
| 0.9 lb/ft² | 400 mm | αw0.70 | |
| 0.9 lb/ft² | 200 mm | αw0.69 |
Dimensions: 20 x 20 inches