Leca concrete block cavity resonator Sound Leca Normale

Cavity resonator – Sound Leca Normale

PTB reference data

Original description

Material properties

Manufacturer: Associazione Nazionale Produttori Elementi Leca

ISO 354 – reverberation chamber

αw

0.58

αp nach ISO 11654

125 Hz

0.45

250 Hz

0.75

500 Hz

0.55

1000 Hz

0.50

2000 Hz

0.65

4000 Hz

0.50

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Method (354): Measured