FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: FOAMPLASTIC1, C: Misc, D: Porous
Value from the PTB table, not verified
Misc, porous foam plastic 50 mm (CATT: FOAMPLASTIC1)
PTB reference data
Original description
Misc, porous foam plastic 50 mm (CATT: FOAMPLASTIC1)
Material properties
Thickness: 50 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.45
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.20 | 0.40 | 0.95 | 0.80 | 1.00 |
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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 | 0.45 | 0.10 | 0.21 | 0.40 | 0.93 | 0.82 | 0.98 |
Measured values as a table (1 measurement)
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