StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: BRICK_WALL6, C: Walls, D: Bricks
Brick wall with 78 holes, 50 mm mineral wool backing
PTB reference data
Original description
Brick wall with 78 holes, 50 mm mineral wool backing
Material properties
Wall distance: 50 mm
Perforation: 78 holes
Backing: 50 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.48
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.75 | 0.40 | 0.25 | 0.65 | 0.35 |
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Method (354): Measured