AudienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Medium upholstered chair, occupied, front side of seat back 2.5 cm, rear side of seat back 0, top of seat bottom 5 cm, arm rests solid, average
PTB reference data
Original description
Medium upholstered chair, occupied, front side of seat back 2.5 cm, rear side of seat back 0, top of seat bottom 5 cm, arm rests solid, average
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.78
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.70 | 0.80 | 0.85 | 0.85 | 0.85 |
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Method (354): Measured