AudienceHighly absorbent

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: JASA 104 (6) Dec 1998

Specially upholstered chair, unoccupied, front side of seat back 65 %, 2 cm, rear side of seat back 0, top of seat bottom 4-6 cm, arm rests solid, upholstery cushion is covered with a vinyl sheet

PTB reference data

Original description

Specially upholstered chair, unoccupied, front side of seat back 65 %, 2 cm, rear side of seat back 0, top of seat bottom 4-6 cm, arm rests solid, upholstery cushion is covered with a vinyl sheet

Material properties

No further information available.

Measurement data

Sound absorption

ISO 354 – reverberation chamber

αw
0.35

Frequency values

αp nach ISO 11654

f (Hz)1252505001k2k4k
αp0.400.350.400.350.350.25

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Method (354): Measured

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