Acoustic panel with fine slotting / 20 cm air cavity

PTB reference data

Original description

Material properties

Wall distance: 200 mm

ISO 354 – reverberation chamber

αw

0.68

αp nach ISO 11654

125 Hz

0.60

250 Hz

0.90

500 Hz

0.95

1000 Hz

0.75

2000 Hz

0.50

4000 Hz

0.35

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Method (354): Measured