Name: illsonic pyramide flexible PU foam panel with pyramid structure
Creator: Physikalisch-Technische Bundesanstalt (PTB)

illsonic pyramide flexible PU foam panel with pyramid structure – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 2 variants

αw

0.82

αp per ISO 11654

125 Hz

0.25

250 Hz

0.50

500 Hz

1.00

1000 Hz

1.05

2000 Hz

1.05

4000 Hz

1.10

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Compare		Value
	100 mm	αw0.82
	70 mm	αw0.72

Weight / density: 28 kg/m^3

Dimensions: 1000 mm x 1000 mm

illsonic pyramide flexible PU foam panel with pyramid structure

Material properties