FoamBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 254
Value from the PTB table, not verified
Barynal 15 F 20 porous foam absorber
Barynal – 15 F 20
PTB reference data
Original description
Barynal 15 F 20 porous foam absorber
Material properties
Manufacturer: Stankiewicz GmbH
Thickness: 15 mm
Wall distance: 0 mm
Surface: black, waterproof and oil-resistant facing
Up to fire class: not easily flammable
Mounting: optionally with self-adhesive backing coating
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.25
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.05 | 0.15 | 0.75 | 0.60 | 0.50 |
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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 | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 mm · 0 | 0.25 | 0.04 | 0.04 | 0.04 | 0.04 | 0.05 | 0.07 | 0.10 | 0.19 | 0.21 | 0.60 | 0.97 | 0.72 | 0.42 | 0.60 | 0.81 | 0.61 | 0.50 | 0.33 | 0.31 |
Measured values as a table (1 measurement)
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