FabricHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: J.Meyer, Kirchenakustik, Verlag E.Bochinsky
Value from the PTB table, not verified
Wall carpet with mineral fiber and air cavity
PTB reference data
Original description
Wall carpet with mineral fiber and air cavity
Material properties
Wall distance: 10 cm
Backing: 5 cm mineral fiber
Application: wall
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.80
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.50 | 0.85 | 0.90 | 0.85 | 0.85 |
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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 |
|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.80 | 0.25 | 0.50 | 0.85 | 0.90 | 0.85 | 0.85 |
Measured values as a table (1 measurement)
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