Spruce wood paneling, slotted with fiberboard tongues

PTB reference data

Original description

Material properties

Thickness: 20 mm

Wall distance: 105 mm

Surface: unvarnished

ISO 354 – reverberation chamber

αw

0.27

αp nach ISO 11654

125 Hz

0.40

250 Hz

0.70

500 Hz

0.15

1000 Hz

0.05

2000 Hz

0.10

4000 Hz

0.15

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Method (354): Measured