FabricHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Dalenbäck, Datensatz der CATT-Software, November 2000. Ursprüngliche Quelle: . Data-Category in CATT: VORHANG_2FACH_G, C: Walls, D: Baumwollplüsch
Value from the PTB table, not verified
Cotton plush "Malta", hanging, double-ruffled
PTB reference data
Original description
Cotton plush "Malta", hanging, double-ruffled
Material properties
Wall distance: 8.7 in
Application: wall
Mounting: hanging, double-ruffled
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.75
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.45 | 0.75 | 0.80 | 1.00 | 1.00 |
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Value from the PTB table, not verified
NRC: 0.75 (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 |
|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.75 | 0.06 | 0.44 | 0.73 | 0.79 | 0.99 | 0.99 |
Measured values as a table (1 measurement)
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