Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Type A300c – Almute
Original description
Porous sintered metal panel
ISO 354 – reverberation chamber· 3 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.85 | |
| 400 mm | αw0.70 | |
| 200 mm | αw0.69 |
Weight / density: 0.8 lb/ft²
Dimensions: 20 x 20 inches
