OtherBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: PANEL3, C: Walls, D: Panel
Value from the PTB table, not verified
Wall panel with 2 mm slot and mineral wool
PTB reference data
Original description
Wall panel with 2 mm slot and mineral wool
Material properties
Hole size: 0.1 in
Backing: mineral wool
Application: wall
Mounting: on 1 in studs
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.35
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.65 | 0.50 | 0.20 | 0.10 | 0.05 |
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Value from the PTB table, not verified
NRC: 0.35 (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 |
|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.35 | 0.09 | 0.67 | 0.49 | 0.21 | 0.09 | 0.07 |
Measured values as a table (1 measurement)
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