Name: Acoustical plaster (Zonolite)
Creator: Physikalisch-Technische Bundesanstalt (PTB)

Acoustical plaster (Zonolite) – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.69

αp per ISO 11654

125 Hz

0.25

250 Hz

0.45

500 Hz

0.80

1000 Hz

0.90

2000 Hz

0.90

4000 Hz

0.85

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Compare		Value
	1-in	αw0.69
	1/2-in	αw0.61

Acoustical plaster (Zonolite)

Material properties