Name: Wilhelmi acoustic panel Variantex-Rupfen
Creator: Physikalisch-Technische Bundesanstalt (PTB)

Wilhelmi acoustic panel Variantex-Rupfen – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.55

αp per ISO 11654

125 Hz

0.30

250 Hz

0.25

500 Hz

0.45

1000 Hz

0.85

2000 Hz

0.75

4000 Hz

0.65

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Compare		Value
	50 mm	αw0.55
	300 mm	αw0.53

Weight / density: 6 - 7 kg / m²

Wilhelmi acoustic panel Variantex-Rupfen

Material properties