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

Wilhelmi-Mikropor-S acoustic panel for ceilings

PTB reference data

Original description

Material properties

Wall distance: 300 mm

Application: ceiling

Measurement data

Sound absorption

ISO 354 – reverberation chamber

αw

0.53

Frequency values

αp nach ISO 11654

125 Hz

0.40

250 Hz

0.30

500 Hz

0.50

1000 Hz

0.80

2000 Hz

0.60

4000 Hz

0.60

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Method (354): Measured

Acoustic Index

The database for acoustic material data. Professional measurement results per ISO standards.

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