GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: PLASTER7, C: Walls, D: Slotted
Value from the PTB table, not verified
Walls, slotted 13 mm gypsum board (12%), 106 x 3 mm² on studs and mineral wool
PTB reference data
Original description
Walls, slotted 13 mm gypsum board (12%), 106 x 3 mm² on studs and mineral wool
Material properties
Thickness: 13 mm
Perforation: 12%
Backing: mineral wool
Surface: slotted
Application: wall
Mounting: on studs
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.50
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.20 | 0.70 | 1.00 | 0.55 | 0.40 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.50 | 0.20 | 0.22 | 0.71 | 0.99 | 0.55 | 0.42 |
Measured values as a table (1 measurement)
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