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 over 1 inch air space
PTB reference data
Original description
Rockwool blanket, 2 inch thick batt (Semi-Thik), mounted over 1 inch air space
Material properties
Manufacturer: Rockwool
Thickness: 2 inch
Wall distance: 1 inch
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.78
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.60 | 1.00 | 0.90 | 0.90 | 0.85 |
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Method (354): Measured