FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Foam, Sonex, 4 inch thick on floor
Sonex
PTB reference data
Original description
Foam, Sonex, 4 inch thick on floor
Material properties
Thickness: 4 inch
Wall distance: 0 mm
Application: floor
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.83
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.70 | 1.05 | 1.00 | 1.00 | 1.00 |
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Method (354): Measured