StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Rockfon Diffusorblox unpainted concrete masonry unit
Diffusorblox
PTB reference data
Original description
Rockfon Diffusorblox unpainted concrete masonry unit
Material properties
Manufacturer: Rockfon A/S
Thickness: 12 inch
Wall distance: 0 mm
Surface: unpainted
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.86
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 1.00 | 0.90 | 0.95 | 0.75 | 0.80 | 0.75 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured