OtherHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Sound System Engineering, Don Davis and Carolyn Davis
Sprayed Limpet asbestos, 3/4 inch, 1 coat, unpainted on solid backing
PTB reference data
Original description
Sprayed Limpet asbestos, 3/4 inch, 1 coat, unpainted on solid backing
Material properties
Thickness: 3/4 inch
Backing: solid backing
Surface: unpainted
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.61
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.20 | 0.70 | 0.90 | 0.95 | 0.85 |
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Method (354): Measured