AudienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Medium upholstered chair, unoccupied, front side of seat back 2.5 cm, average
PTB reference data
Original description
Medium upholstered chair, unoccupied, front side of seat back 2.5 cm, average
Material properties
Thickness: Seat back front 2.5 cm, seat top 5 cm, armrests solid
Application: seating
Mounting: unoccupied
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.64
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.65 | 0.65 | 0.70 | 0.65 | 0.60 |
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Method (354): Measured