Wood ceiling, 2 layers, 28 mm w/lighting & ventilation

PTB reference data

Original description

Material properties

Thickness: 28 mm

Application: ceiling

ISO 354 – reverberation chamber

αw

0.11

αp nach ISO 11654

125 Hz

0.20

250 Hz

0.15

500 Hz

0.10

1000 Hz

0.10

2000 Hz

0.05

4000 Hz

0.05

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Method (354): Measured