MetalBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 227
Richter System 16 aluminum panel ceiling with felt
Richter System 16
PTB reference data
Original description
Richter System 16 aluminum panel ceiling with felt
Material properties
Manufacturer: Rheinhold & Mahla AG
Wall distance: 150 mm
Perforation: 11.15 %
Hole size: 1.85 mm
Backing: 10 mm Firet felt
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.42
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.20 | 0.50 | 0.60 | 0.55 | 0.60 |
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Method (354): Measured
