Glass & transparentHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.Hilge / C.Nocke
Value from the PTB table, not verified
Micro-perforated PVC foil, clamped to an aluminum frame construction
Barrisol Microsorber
PTB reference data
Original description
Micro-perforated PVC foil, clamped to an aluminum frame construction
Material properties
Manufacturer: BARRISOL - Normalu S.A.
Thickness: 0.17-0.2 mm
Wall distance: 100 mm
Perforation: hole spacing 2 mm
Hole size: 0.2 mm
Mounting: clamped to an aluminum frame construction
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.70
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.70 | 1.00 | 0.80 | 0.65 | 0.60 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.17-0.2mm · 100 mm · stretched membrane ceilings | 0.70 | 0.15 | 0.20 | 0.28 | 0.48 | 0.65 | 0.95 | 1.02 | 1.01 | 0.98 | 0.92 | 0.79 | 0.71 | 0.65 | 0.67 | 0.67 | 0.64 | 0.62 | 0.61 |
Measured values as a table (1 measurement)
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