GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data online at www.rigips.de, as of April 01
Value from the PTB table, not verified
Rigiton 20/46 perforated gypsum board with 50 mm mineral wool
Rigiton 20/46
PTB reference data
Original description
Rigiton 20/46 perforated gypsum board with 50 mm mineral wool
Material properties
Manufacturer: Rigips GmbH
Wall distance: 7.9 in
Perforation: 20/46
Backing: 2 in mineral wool
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.80
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.95 | 0.95 | 0.80 | 0.55 | 0.40 |
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Value from the PTB table, not verified
NRC: 0.80 (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 |
|---|---|---|---|---|---|---|---|
| 200 · Lochung round, regelmäßig, Durchmesser 20 mm, Lochabstand 46 mm, Lochflächenanteil 14,8% | 0.80 | 0.61 | 0.94 | 0.94 | 0.82 | 0.54 | 0.40 |
Measured values as a table (1 measurement)
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