FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic Waffle willtec melamine foam (series 2)
Waffel willtec – 65/125
PTB reference data
Original description
pinta acoustic Waffle willtec melamine foam (series 2)
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 65/125 mm
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.75
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.45 | 0.85 | 0.90 | 0.95 | 1.00 |
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 65/125 mm · 9,5±1,5 kg/m³ · 0 | 0.75 | 0.07 | 0.11 | 0.24 | 0.34 | 0.45 | 0.61 | 0.79 | 0.86 | 0.87 | 0.88 | 0.89 | 0.92 | 0.96 | 0.95 | 0.98 | 1.02 | 1.05 | 1.04 |
Measured values as a table (1 measurement)
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