Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Hanging panels, 2.70 pcf fiberglass in polyethylene casing 0.003 inch thick
baffles – INC 27E
PTB reference data
Original description
Hanging panels, 2.70 pcf fiberglass in polyethylene casing 0.003 inch thick
Material properties
Manufacturer: Industrial Noise Control
Thickness: 1 1/2 inch
Density: 2.70 pcf
Surface: polyethylene casing 0.003 inch thick
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
1.05
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.60 | 1.00 | 1.00 | 0.85 | 0.45 |
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Value from the PTB table, not verified
NRC: 1.05 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 1 1/2 inch · 0.39 lb/ft² | 1.05 | 0.32 | 0.62 | 1.27 | 1.48 | 0.86 | 0.46 |
Measured values as a table (1 measurement)
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