Slotted gypsum board cassette

PTB reference data

Original description

Material properties

Thickness: 9.5 mm

Wall distance: 30 mm

Dimensions: 625 x 625 mm

Perforation: slotted

Hole size: slot width 2.3 mm

ISO 354 – reverberation chamber

αw

0.15

αp nach ISO 11654

125 Hz

0.05

250 Hz

0.10

500 Hz

0.25

1000 Hz

0.30

2000 Hz

0.15

4000 Hz

0.05

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Method (354): Measured