Mineral woolBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 7-1
Value from the PTB table, not verified
Plywood-faced mineral fiber panel on sub-frame
PTB reference data
Original description
Plywood-faced mineral fiber panel on sub-frame
Material properties
Thickness: 0.2 in plywood
Wall distance: 2 in air cavity, 2 in mineral fiber panel
Density: 100 kg/m³
Flow resistance: 20 Rayl/cm
Application: wall
Mounting: on sub-frame
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.30
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.55 | 0.30 | 0.20 | 0.10 | 0.10 |
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Value from the PTB table, not verified
NRC: 0.30 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 mm Sperrholz · Sperrholz, 4.2 kg/m^2, mineral-fibre panel 100kg/m^3 · 50 mm Air cavity, plus 50 mm mineral-fibre panel · 6 mm Sperrholz, 4.2 kg/m^2 montiert on Kontruktion from Latten 25 / 50 mm, darin eingelegt mineral-fibre panel, 50 mm, 100kg/m^3, 20 Rayl/cm | 0.30 | 0.33 | 0.40 | 0.70 | 0.65 | 0.53 | 0.43 | 0.33 | 0.29 | 0.27 | 0.20 | 0.18 | 0.18 | 0.12 | 0.11 | 0.11 | 0.10 | 0.11 | 0.13 | 0.08 |
Measured values as a table (1 measurement)
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