AudienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: JASA 104 (6) Dec 1998
Heavily upholstered chair, occupied, front side of seat back 7.5 cm, rear side of seat back sometimes, top of seat bottom 10 cm, arm rests 2 cm, Salzburg, Festspielhaus
PTB reference data
Original description
Heavily upholstered chair, occupied, front side of seat back 7.5 cm, rear side of seat back sometimes, top of seat bottom 10 cm, arm rests 2 cm, Salzburg, Festspielhaus
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.85
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.70 | 0.80 | 0.90 | 0.90 | 0.90 | 0.90 |
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Method (354): Measured