Perforated gypsum board with non-woven and mineral fiber

PTB reference data

Original description

Material properties

Thickness: 9.5 mm

Wall distance: 400 mm

Perforation: 6 %

Hole size: 8 mm, 15 mm, 20 mm

Backing: non-woven, mineral fiber

ISO 354 – reverberation chamber

αw

0.46

αp nach ISO 11654

125 Hz

0.65

250 Hz

0.65

500 Hz

0.50

1000 Hz

0.45

2000 Hz

0.25

4000 Hz

0.25

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Method (354): Measured