StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
RPG Diffusor Systems Diffusorblox, painted concrete masonry unit
Diffusorblox
PTB reference data
Original description
RPG Diffusor Systems Diffusorblox, painted concrete masonry unit
Material properties
Manufacturer: RPG Diffusor Systems
Thickness: 12 inches
Wall distance: 0 mm
Surface: painted
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.45
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.75 | 0.50 | 0.55 | 0.35 | 0.25 | 0.25 |
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Method (354): Measured