AudienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 906)
Empty chairs, upholstered with cloth cover
PTB reference data
Original description
Empty chairs, upholstered with cloth cover
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.70
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.20 | 0.25 | 0.30 | 0.25 | 0.25 |
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Method (354): Measured