WoodLow-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: WOOD_VENEER1, C: Walls, D: 8
Value from the PTB table, not verified
Walls, 8 mm wood veneer on 50 mm studs
PTB reference data
Original description
Walls, 8 mm wood veneer on 50 mm studs
Material properties
Thickness: 0.3 in
Wall distance: 2 in
Mounting: on 2 in studs
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.15
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.20 | 0.15 | 0.10 | 0.10 | 0.10 |
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Value from the PTB table, not verified
NRC: 0.15 (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 | 0.15 | 0.28 | 0.22 | 0.17 | 0.09 | 0.10 | 0.11 |
Measured values as a table (1 measurement)
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