Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 257
Value from the PTB table, not verified
Egi-Dämmplatte EP/V gl mineral fiber absorber
Egi-Dämmplatte – EP/V gl
PTB reference data
Original description
Egi-Dämmplatte EP/V gl mineral fiber absorber
Material properties
Manufacturer: Thyssen Schalker Verein GmbH
Thickness: 0.8 in
Wall distance: 0 in, 7.9 in
Surface: glass veil faced on one side
Up to fire class: not easily flammable
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.65
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.50 | 0.75 | 0.65 | 0.70 | 0.60 |
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| Compare | Value | |
|---|---|---|
| 7.9 in | NRC0.65 | |
| 0 | NRC0.55 |
NRC: 0.65 (derived from ISO 354 lab data)
Dimensions: 600 x 49 in
Measured values as a table (2 measurements)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 mm · 0 | 0.55 | 0.06 | 0.09 | 0.15 | 0.21 | 0.26 | 0.35 | 0.42 | 0.49 | 0.59 | 0.68 | 0.73 | 0.82 | 0.92 | 0.92 | 0.92 | 0.92 |
| 20 mm · 200 mm | 0.65 | 0.12 | 0.22 | 0.36 | 0.49 | 0.59 | 0.66 | 0.79 | 0.73 | 0.65 | 0.60 | 0.63 | 0.66 | 0.72 | 0.65 | 0.60 | 0.57 |
Measured values as a table (2 measurements)
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