AudienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Audiences, seats fully occupied, medium upholstered
PTB reference data
Original description
Audiences, seats fully occupied, medium upholstered
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.65
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.60 | 0.70 | 0.70 | 0.70 | 0.65 |
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Method (354): Measured