Physikalisch-Technische Bundesanstalt
Fonte: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Type 475 FSK – Micro-Aire
Descrizione originale
Manville Micro-Aire Type 475 FSK pannello per condotti rivestito
ISO 354 – camera riverberante· 6 varianti
αp secondo la ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.60 | 0.95 | 1.10 | 1.10 | 1.10 |
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Gratis. Senza password.
| Confronta | Valore | |||
|---|---|---|---|---|
| 1 1/2 inch | 0.47 lb/ft² | 25 mm | αw0.88 | |
| 1 1/2 inch | 0.47 lb/ft² | 0 | αw0.80 | |
| 1 inch | 0.42 lb/ft² | 25 mm | αw0.76 | |
| 1 inch | 0.35 lb/ft² | 25 mm | αw0.70 | |
| 1 inch | 0.42 lb/ft² | 0 | αw0.67 | |
| 1 inch | 0.35 lb/ft² | 0 | αw0.63 |
Dimensioni: to 48 x 120 inches
