Sonitus

Absorption comparison

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Sound absorption coefficient αs

  • Bluefiber Pad 40 · Direct · αw = 0.80 (class B)
  • Bluefiber Pad 40 · 50 mm air gap · αw = 0.90 (class A)
  • Bluefiber Pad 40 · 200 mm air gap · αw = 1.00 (class A)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 100 Hz 125 Hz 160 Hz 200 Hz 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz 1 kHz 1.25 kHz 1.6 kHz 2 kHz 2.5 kHz 3.15 kHz 4 kHz 5 kHz Bluefiber Pad 40 · Direct · 100 Hz: α = 0.11 Bluefiber Pad 40 · Direct · 125 Hz: α = 0.17 Bluefiber Pad 40 · Direct · 160 Hz: α = 0.23 Bluefiber Pad 40 · Direct · 200 Hz: α = 0.35 Bluefiber Pad 40 · Direct · 250 Hz: α = 0.48 Bluefiber Pad 40 · Direct · 315 Hz: α = 0.60 Bluefiber Pad 40 · Direct · 400 Hz: α = 0.74 Bluefiber Pad 40 · Direct · 500 Hz: α = 0.79 Bluefiber Pad 40 · Direct · 630 Hz: α = 0.90 Bluefiber Pad 40 · Direct · 800 Hz: α = 0.95 Bluefiber Pad 40 · Direct · 1 kHz: α = 0.96 Bluefiber Pad 40 · Direct · 1.25 kHz: α = 0.98 Bluefiber Pad 40 · Direct · 1.6 kHz: α = 0.97 Bluefiber Pad 40 · Direct · 2 kHz: α = 0.99 Bluefiber Pad 40 · Direct · 2.5 kHz: α = 0.99 Bluefiber Pad 40 · Direct · 3.15 kHz: α = 0.97 Bluefiber Pad 40 · Direct · 4 kHz: α = 0.94 Bluefiber Pad 40 · Direct · 5 kHz: α = 1.00 Bluefiber Pad 40 · 50 mm air gap · 100 Hz: α = 0.16 Bluefiber Pad 40 · 50 mm air gap · 125 Hz: α = 0.25 Bluefiber Pad 40 · 50 mm air gap · 160 Hz: α = 0.31 Bluefiber Pad 40 · 50 mm air gap · 200 Hz: α = 0.47 Bluefiber Pad 40 · 50 mm air gap · 250 Hz: α = 0.61 Bluefiber Pad 40 · 50 mm air gap · 315 Hz: α = 0.76 Bluefiber Pad 40 · 50 mm air gap · 400 Hz: α = 0.90 Bluefiber Pad 40 · 50 mm air gap · 500 Hz: α = 0.97 Bluefiber Pad 40 · 50 mm air gap · 630 Hz: α = 1.03 Bluefiber Pad 40 · 50 mm air gap · 800 Hz: α = 1.04 Bluefiber Pad 40 · 50 mm air gap · 1 kHz: α = 1.00 Bluefiber Pad 40 · 50 mm air gap · 1.25 kHz: α = 0.98 Bluefiber Pad 40 · 50 mm air gap · 1.6 kHz: α = 0.96 Bluefiber Pad 40 · 50 mm air gap · 2 kHz: α = 0.95 Bluefiber Pad 40 · 50 mm air gap · 2.5 kHz: α = 0.98 Bluefiber Pad 40 · 50 mm air gap · 3.15 kHz: α = 1.02 Bluefiber Pad 40 · 50 mm air gap · 4 kHz: α = 1.01 Bluefiber Pad 40 · 50 mm air gap · 5 kHz: α = 1.06 Bluefiber Pad 40 · 200 mm air gap · 100 Hz: α = 0.24 Bluefiber Pad 40 · 200 mm air gap · 125 Hz: α = 0.36 Bluefiber Pad 40 · 200 mm air gap · 160 Hz: α = 0.47 Bluefiber Pad 40 · 200 mm air gap · 200 Hz: α = 0.69 Bluefiber Pad 40 · 200 mm air gap · 250 Hz: α = 0.78 Bluefiber Pad 40 · 200 mm air gap · 315 Hz: α = 0.89 Bluefiber Pad 40 · 200 mm air gap · 400 Hz: α = 1.01 Bluefiber Pad 40 · 200 mm air gap · 500 Hz: α = 1.00 Bluefiber Pad 40 · 200 mm air gap · 630 Hz: α = 0.93 Bluefiber Pad 40 · 200 mm air gap · 800 Hz: α = 0.85 Bluefiber Pad 40 · 200 mm air gap · 1 kHz: α = 0.90 Bluefiber Pad 40 · 200 mm air gap · 1.25 kHz: α = 1.00 Bluefiber Pad 40 · 200 mm air gap · 1.6 kHz: α = 0.97 Bluefiber Pad 40 · 200 mm air gap · 2 kHz: α = 1.00 Bluefiber Pad 40 · 200 mm air gap · 2.5 kHz: α = 0.99 Bluefiber Pad 40 · 200 mm air gap · 3.15 kHz: α = 1.02 Bluefiber Pad 40 · 200 mm air gap · 4 kHz: α = 1.04 Bluefiber Pad 40 · 200 mm air gap · 5 kHz: α = 1.08 Frequency
100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1 kHz1.25 kHz1.6 kHz2 kHz2.5 kHz3.15 kHz4 kHz5 kHz αwClass
Bluefiber Pad 40 · Direct 0.110.170.230.350.480.600.740.790.900.950.960.980.970.990.990.970.941.00 0.80B
Bluefiber Pad 40 · 50 mm air gap 0.160.250.310.470.610.760.900.971.031.041.000.980.960.950.981.021.011.06 0.90A
Bluefiber Pad 40 · 200 mm air gap 0.240.360.470.690.780.891.011.000.930.850.901.000.971.000.991.021.041.08 1.00A

ISO 354 measurement, acoustics laboratory Fuchs Raumingenieure, Nürnberg, 01.10.2025