Cotton plush (chenille), gathered

PTB reference data

Original description

Material properties

Wall distance: 50 mm

Surface weight: 0.417 kg/m²

Flow resistance: 45 Rayl

ISO 354 – reverberation chamber

αw

0.76

αp nach ISO 11654

125 Hz

0.15

250 Hz

0.45

500 Hz

0.85

1000 Hz

0.90

2000 Hz

1.05

4000 Hz

1.05

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Method (354): Measured