FabricHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic BALANCE ART – Trevira textile absorber
BALANCE ART – Trevira
PTB reference data
Original description
pinta acoustic BALANCE ART – Trevira textile absorber
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 2 in, 1 in, 0.8 in
Wall distance: 0 in
Backing: willtec absorber element
Mounting: in snap frame
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 3 variants
NRC
0.85
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.60 | 0.90 | 0.95 | 0.90 | 0.85 |
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| Compare | Value | |
|---|---|---|
| 2 in | NRC0.85 | |
| 1 in | NRC0.65 | |
| 0.8 in | NRC0.60 |
NRC: 0.85 (derived from ISO 354 lab data)
Dimensions: 3000 x 138 in
Distance: 0
Measured values as a table (3 measurements)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm · 0 | 0.85 | 0.04 | 0.28 | 0.26 | 0.52 | 0.62 | 0.70 | 0.77 | 0.95 | 0.95 | 0.95 | 0.96 | 0.97 | 0.93 | 0.89 | 0.88 | 0.83 | 0.88 | 0.84 |
| 25 mm · 0 | 0.65 | 0.09 | 0.15 | 0.17 | 0.27 | 0.34 | 0.43 | 0.49 | 0.54 | 0.65 | 0.72 | 0.80 | 0.85 | 0.89 | 0.85 | 0.83 | 0.81 | 0.79 | 0.76 |
| 20 mm · 0 | 0.60 | 0.08 | 0.14 | 0.16 | 0.23 | 0.29 | 0.32 | 0.42 | 0.46 | 0.56 | 0.61 | 0.72 | 0.79 | 0.86 | 0.83 | 0.86 | 0.82 | 0.79 | 0.76 |
Measured values as a table (3 measurements)
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