Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter www.ibp.fhg.de/rata
Original description
Fraunhofer IBP micro-perforated metal cassette
ISO 354 – reverberation chamber· 4 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.45 | |
| 200 mm | αw0.44 | |
| 100 mm | αw0.34 | |
| 50 mm | αw0.30 |
