Sonitus

Absorption comparison

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Sound absorption coefficient αs

  • Pyramis 5 F · Direct · αw = 0.45 (class D)
  • Pyramis 7 F · Direct · αw = 0.55 (class D)
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 Pyramis 5 F · Direct · 100 Hz: α = 0.08 Pyramis 5 F · Direct · 125 Hz: α = 0.09 Pyramis 5 F · Direct · 160 Hz: α = 0.10 Pyramis 5 F · Direct · 200 Hz: α = 0.16 Pyramis 5 F · Direct · 250 Hz: α = 0.19 Pyramis 5 F · Direct · 315 Hz: α = 0.28 Pyramis 5 F · Direct · 400 Hz: α = 0.33 Pyramis 5 F · Direct · 500 Hz: α = 0.46 Pyramis 5 F · Direct · 630 Hz: α = 0.58 Pyramis 5 F · Direct · 800 Hz: α = 0.69 Pyramis 5 F · Direct · 1 kHz: α = 0.78 Pyramis 5 F · Direct · 1.25 kHz: α = 0.82 Pyramis 5 F · Direct · 1.6 kHz: α = 0.83 Pyramis 5 F · Direct · 2 kHz: α = 0.82 Pyramis 5 F · Direct · 2.5 kHz: α = 0.85 Pyramis 5 F · Direct · 3.15 kHz: α = 0.89 Pyramis 5 F · Direct · 4 kHz: α = 0.91 Pyramis 5 F · Direct · 5 kHz: α = 0.91 Pyramis 7 F · Direct · 100 Hz: α = 0.06 Pyramis 7 F · Direct · 125 Hz: α = 0.11 Pyramis 7 F · Direct · 160 Hz: α = 0.12 Pyramis 7 F · Direct · 200 Hz: α = 0.21 Pyramis 7 F · Direct · 250 Hz: α = 0.22 Pyramis 7 F · Direct · 315 Hz: α = 0.32 Pyramis 7 F · Direct · 400 Hz: α = 0.42 Pyramis 7 F · Direct · 500 Hz: α = 0.54 Pyramis 7 F · Direct · 630 Hz: α = 0.67 Pyramis 7 F · Direct · 800 Hz: α = 0.72 Pyramis 7 F · Direct · 1 kHz: α = 0.81 Pyramis 7 F · Direct · 1.25 kHz: α = 0.83 Pyramis 7 F · Direct · 1.6 kHz: α = 0.87 Pyramis 7 F · Direct · 2 kHz: α = 0.88 Pyramis 7 F · Direct · 2.5 kHz: α = 0.93 Pyramis 7 F · Direct · 3.15 kHz: α = 0.91 Pyramis 7 F · Direct · 4 kHz: α = 0.92 Pyramis 7 F · Direct · 5 kHz: α = 0.95 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
Pyramis 5 F · Direct 0.080.090.100.160.190.280.330.460.580.690.780.820.830.820.850.890.910.91 0.45D
Pyramis 7 F · Direct 0.060.110.120.210.220.320.420.540.670.720.810.830.870.880.930.910.920.95 0.55D

ISO 354 – Institut IGH, Zagreb, test report EN-72570/100/21-212/21, 2021

ISO 354 – Institut IGH, Zagreb, test report EN-72570/100/21-213/21, 2021