WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data im Internet, mit Verweis auf ita-Prüfzeugnis, 14.11.2000
Value from the PTB table, not verified
Wilhelmi Widoplan panels with 15 mm joint, mineral fiber backing
Panels with 15 mm joint
PTB reference data
Original description
Wilhelmi Widoplan panels with 15 mm joint, mineral fiber backing
Material properties
Manufacturer: Wilhelmi Werke AG
Backing: 30 mm mineral fiber
Up to fire class: A2 or B1
Application: ceiling
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.35
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.60 | 0.65 | 0.45 | 0.30 | 0.25 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.35 | 0.36 | 0.82 | 0.58 | 0.59 | 0.62 | 0.66 | 0.64 | 0.66 | 0.63 | 0.55 | 0.46 | 0.38 | 0.32 | 0.29 | 0.28 | 0.28 | 0.25 | 0.23 |
Measured values as a table (1 measurement)
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