OtherHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 605)
Ventilation grille (approx. per sq. m.)
PTB reference data
Original description
Ventilation grille (approx. per sq. m.)
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.60
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
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Method (354): Measured