FabricHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 5-3
Value from the PTB table, not verified
Plush, chenille, cotton, gathered
PTB reference data
Original description
Plush, chenille, cotton, gathered
Material properties
Wall distance: 200 mm
Surface weight: 0.417 kg/m²
Flow resistance: 45 Rayl
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 | 0.20 | 0.55 | 0.90 | 1.00 | 1.00 | 1.00 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0,417 kg/m^2 · 200 mm · gefaltet, Materialfläche / Prüffläche = 3 | 0.85 | 0.13 | 0.20 | 0.22 | 0.33 | 0.66 | 0.73 | 0.82 | 0.94 | 0.95 | 0.97 | 1.06 | 1.03 | 1.05 | 1.07 | 1.08 | 1.08 | 1.11 | 1.13 | 1.18 |
Measured values as a table (1 measurement)
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