0.5 m cavity with 100 mm mineral wool at front of cavity

PTB reference data

Original description

Material properties

Wall distance: 0.5 m

Backing: 100 mm mineral wool

ISO 354 – reverberation chamber

αw

0.63

αp nach ISO 11654

125 Hz

0.25

250 Hz

0.25

500 Hz

0.25

1000 Hz

0.20

2000 Hz

0.15

4000 Hz

0.15

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Method (354): Measured