StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Proudfoot Soundblox Type A1 slotted concrete block, unfilled
Type A1 – Soundblox
PTB reference data
Original description
Proudfoot Soundblox Type A1 slotted concrete block, unfilled
Material properties
Manufacturer: Proudfoot Co.
Thickness: 4 inches, 6 inches, 8 inches
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.55
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.95 | 0.45 | 0.40 | 0.40 | 0.50 | 0.60 |
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| Compare | Value | ||
|---|---|---|---|
| 8 inches | 32 lb/ft² | αw0.55 | |
| 6 inches | 26 lb/ft² | αw0.50 | |
| 4 inches | 23 lb/ft² | αw0.43 |
Dimensions: 8 x 16 inches
Distance: 0