Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 190
Value from the PTB table, not verified
Knauf Acoustone mineral fiber panels
Acoustone mineral fiber panels
PTB reference data
Original description
Knauf Acoustone mineral fiber panels
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Thickness: 0.7 in
Wall distance: 16 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
NRC
0.80
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.50 | 0.75 | 0.95 | 0.90 | 0.90 |
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| Compare | Value |
|---|---|
| NRC0.80 | |
| NRC0.75 |
NRC: 0.80 (derived from ISO 354 lab data)
Weight / density: ca. 6,5 kg / m²
Dimensions: 625 x 25 in, 625 x 49 in
Distance: 16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19 mm · ca. 6,5 kg / m² · 400 mm · "Fissured" | 0.75 | 0.49 | 0.47 | 0.43 | 0.41 | 0.50 | 0.60 | 0.69 | 0.80 | 0.90 | 0.99 | 0.95 | 0.93 | 0.90 | 0.88 | 0.85 | 0.83 |
| 19 mm · ca. 6,5 kg / m² · 400 mm · "Glacier" | 0.80 | 0.30 | 0.35 | 0.40 | 0.46 | 0.58 | 0.65 | 0.77 | 0.83 | 0.91 | 0.99 | 0.95 | 0.92 | 0.89 | 0.89 | 0.90 | 0.90 |
Measured values as a table (2 measurements)
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