Reference: audienceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Data-Category in CATT: AUDIENCE70, C: Audiences, D: Seated
Value from the PTB table, not verified
Audiences, seated audience on wooden chairs, ca. 2 pers/m²
PTB reference data
Original description
Audiences, seated audience on wooden chairs, ca. 2 pers/m²
Material properties
No further information available.
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
Values per m² of audience area, not per chair or person.
NRC
0.80
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.40 | 0.80 | 1.00 | 0.95 | 0.85 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
Value from the PTB table, not verified
NRC: 0.80 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| ca. 2 pers/m2 | 0.80 | 0.24 | 0.40 | 0.78 | 0.98 | 0.96 | 0.87 |
Measured values as a table (1 measurement)
Access frequency bands, variants and export. Create a permanent free account
Last updated: