StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Harris:Handbook of Acoustical Measurements and Noise Control, McGraw Hill 1991
Concrete block, coarse
PTB reference data
Original description
Concrete block, coarse
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.34
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.45 | 0.30 | 0.30 | 0.40 | 0.25 |
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| Compare | Value |
|---|---|
| αw0.34 | |
| αw0.34 |