StoneLow absorption
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: RAMSETE
Partition 8x25x25 cm, 10 holes, perforation ratio 60%, whitewashed
PTB reference data
Original description
Partition 8x25x25 cm, 10 holes, perforation ratio 60%, whitewashed
Material properties
Perforation: 60%
Surface: whitewashed
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.03
Frequency values
αp nach ISO 11654
| f (Hz) | 63 | 125 | 250 | 500 | 1k | 2k |
|---|---|---|---|---|---|---|
| αp | 0.00 | 0.00 | 0.00 | 0.05 | 0.05 | 0.05 |
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Method (354): Measured