Metal baffle ceiling, aluminum with mineral fiber panel

PTB reference data

Original description

Material properties

Thickness: 0.3 mm + baffle curvature

Wall distance: 176 mm

Surface weight: 3.2 kg/m

Backing: mineral fiber panel, 20 mm thick

Surface: surface-treated on room side

Flow resistance: 90 kPa·s/m

Mounting: on carrier rails

ISO 354 – reverberation chamber

αw

0.85

αp nach ISO 11654

250 Hz

0.90

500 Hz

1.00

1000 Hz

0.90

2000 Hz

0.85

4000 Hz

0.65

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Method (354): Measured