Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Rockwool blanket, 4 inch thick batt (Full-Thik), with 3/16 inch Transite facing
PTB reference data
Original description
Rockwool blanket, 4 inch thick batt (Full-Thik), with 3/16 inch Transite facing
Material properties
Thickness: 4 inch
Wall distance: 1 inch
Perforation: 11%
Backing: 3/16 inch thick perforated cement asbestos board (Transite)
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.70
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.90 | 1.00 | 0.90 | 0.70 | 0.30 |
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Method (354): Measured