StoneBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: BRICK_WALL5, C: Walls, D: Bricks
Walls, bricks with 78 holes (facing out) directly on stonewall
PTB reference data
Original description
Walls, bricks with 78 holes (facing out) directly on stonewall
Material properties
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.40
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.15 | 0.35 | 0.85 | 0.45 | 0.55 |
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Method (354): Measured