FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic Waffel S35sv polyurethane foam
Waffel S35sv – 20/35
PTB reference data
Original description
pinta acoustic Waffel S35sv polyurethane foam
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 20 mm, 35 mm
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.35
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.15 | 0.25 | 0.45 | 0.80 | 0.85 |
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20/35 mm · 30 - 34 kg/m³ · 0 | 0.35 | 0.17 | 0.10 | 0.14 | 0.12 | 0.14 | 0.14 | 0.18 | 0.22 | 0.30 | 0.36 | 0.46 | 0.54 | 0.64 | 0.84 | 0.89 | 0.82 | 0.85 | 0.88 |
Measured values as a table (1 measurement)
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