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, Boston, Symphony Hall
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, Boston, Symphony Hall
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.70 | 0.75 | 0.75 | 0.85 | 0.85 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Method (354): Measured