Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Rockwool blanket, 2 inch thick batt (Semi-Thik), mounted against solid backing
PTB reference data
Original description
Rockwool blanket, 2 inch thick batt (Semi-Thik), mounted against solid backing
Material properties
Thickness: 50.8 mm
Backing: solid backing
Mounting: mounted against solid backing
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.69
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.50 | 0.95 | 0.85 | 0.80 | 0.70 |
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Method (354): Measured