Reference surfaceHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: M. Heckl, H.A. Müller: Taschenbuch der Technischen Akustik, Springer 1994
Value from the PTB table, not verified
Drywall panel, 18 mm, with 30 mm mineral fiber mat, wall-mounted
PTB reference data
Original description
Drywall panel, 18 mm, with 30 mm mineral fiber mat, wall-mounted
Material properties
Thickness: 18 mm
Wall distance: 400 mm
Surface weight: 16 kg/m²
Backing: 30 mm mineral fiber mat
Flow resistance: 7.5 Rayl/cm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.10
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.10 | 0.10 | 0.05 | 0.10 | 0.10 |
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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 |
|---|---|---|---|---|---|---|---|
| 18 mm · 16 kg/m^2 · 400 mm · filling with Mineralfasermatte, 30 mm thick, 1,05 kg/m^2, 7,5 Rayl/cm | 0.10 | 0.18 | 0.10 | 0.08 | 0.07 | 0.10 | 0.10 |
Measured values as a table (1 measurement)
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