Mineral woolHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 81
Value from the PTB table, not verified
Armstrong Minaform S-Quadrat honeycomb system, spacing 200 mm
Minaform S-Quadrat
PTB reference data
Original description
Armstrong Minaform S-Quadrat honeycomb system, spacing 200 mm
Material properties
Manufacturer: Armstrong Cork International GmbH
Thickness: 16 mm
Wall distance: 200 mm
Dimensions: honeycomb size: 625 mm x 625 mm, panel strip height: 300 mm
Perforation: irregular scattered perforation
Surface: painted white
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.40
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.15 | 0.40 | 0.80 | 0.85 | 0.75 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 mm · 5,25 kg / m² · 200 mm | 0.40 | 0.08 | 0.03 | 0.08 | 0.10 | 0.12 | 0.20 | 0.23 | 0.43 | 0.60 | 0.75 | 0.80 | 0.88 | 0.85 | 0.83 | 0.80 | 0.83 | 0.72 | 0.72 |
Measured values as a table (1 measurement)
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