Slotted drywall panel, 9.5 mm, 8% open area

PTB reference data

Original description

Material properties

Thickness: 9.5 mm

Wall distance: 200 mm

Perforation: 8%

Hole size: 2.5 mm

ISO 354 – reverberation chamber

αw

0.55

αp nach ISO 11654

125 Hz

0.45

250 Hz

0.85

500 Hz

0.70

1000 Hz

0.55

2000 Hz

0.40

4000 Hz

0.30

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Method (354): Measured