StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: GRAVEL1, C: Floors, D: Gravel,
Floors, gravel, 100 mm thickness
PTB reference data
Original description
Floors, gravel, 100 mm thickness
Material properties
Thickness: 100 mm
Application: floor
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.63
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.60 | 0.65 | 0.70 | 0.75 | 0.80 |
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Method (354): Measured