MetalHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: RAMSETE
back ceiling TI-Metal holes 2mm + L.M. 30mm
PTB reference data
Original description
back ceiling TI-Metal holes 2mm + L.M. 30mm
Material properties
Hole size: 2 mm
Backing: 30 mm mineral wool
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.77
Frequency values
αp nach ISO 11654
| f (Hz) | 63 | 125 | 250 | 500 | 1k | 2k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.25 | 0.70 | 0.95 | 0.90 | 0.95 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured
