WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Mineral or glass wool blanket covered with 10% perforated or 20% slotted hardboard
PTB reference data
Original description
Mineral or glass wool blanket covered with 10% perforated or 20% slotted hardboard
Material properties
Thickness: 2 inch
Wall distance: 1 inch
Perforation: 10%, 20%
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.74
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k |
|---|---|---|---|---|---|
| αp | 0.40 | 0.80 | 0.90 | 0.85 | 0.75 |
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Method (354): Measured