Reference: audienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: CONCERT_CHAIR1, C: Chairs, D: Upholstered
Value from the PTB table, not verified
Chairs, upholstered concert chairs, empty
PTB reference data
Original description
Chairs, upholstered concert chairs, empty
Material properties
No further information available.
Measurement data
Sound absorption
ISO 354 – reverberation chamber
Values per m² of audience area, not per chair or person.
αw
0.80
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.65 | 0.80 | 0.90 | 0.80 | 0.70 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| upholstered | 0.80 | 0.49 | 0.66 | 0.80 | 0.88 | 0.82 | 0.70 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: