Specially upholstered chair, unoccupied, vinyl cover

PTB reference data

Original description

Material properties

Thickness: 2 cm (front of seat back), 4-6 cm (top of seat bottom)

Surface: Vinyl sheet

ISO 354 – reverberation chamber

αw

0.30

αp nach ISO 11654

125 Hz

0.40

250 Hz

0.30

500 Hz

0.35

1000 Hz

0.30

2000 Hz

0.25

4000 Hz

0.20

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Method (354): Measured