WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Ursprüngliche Quelle: Wilhelmi Lieferprogramm Akustikplatten 2.19/77, Ergänzung PTB. Data-Category in CATT: WILHELMI, C: Ceilings, D: Wilhelmi
Value from the PTB table, not verified
Wilhelmi-Mikropor-S acoustic panel for ceilings
PTB reference data
Original description
Wilhelmi-Mikropor-S acoustic panel for ceilings
Material properties
Wall distance: 300 mm
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.55
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.40 | 0.30 | 0.50 | 0.80 | 0.60 | 0.60 |
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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 | 0.55 | 0.42 | 0.28 | 0.49 | 0.78 | 0.58 | 0.62 |
Measured values as a table (1 measurement)
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