Brick material with various perforation ratios (45%, 32%)

PTB reference data

Original description

Material properties

Dimensions: 25 × 30 × 19, 12 × 25 × 5.5

Perforation: 45%, 32%

ISO 354 – reverberation chamber

αw

0.03

αp nach ISO 11654

125 Hz

0.00

250 Hz

0.00

500 Hz

0.05

1000 Hz

0.05

2000 Hz

0.05

4000 Hz

0.05

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Method (354): Measured