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Global Parameters
Air temperature: 20°C
Air pressure: 101325 Pa X Axis: Frequency Range: 20Hz - 150Hz Scale: logarithmic Resolution: medium Angle of incidence: 0° Porous model: Allard and Champoux (1992) Helmholtz model: Ingard/Allard |
Absorber Parameters
• Absorber 1 (6mm plywood, 40mm hole, 600mm sp)
6mm Perforated Panel, 40mm/600mm (0.35%) 50mm Air 170mm Porous Absorbent, 5000 Pa.s/m2 Rigid backing • Absorber 2 (6mm plywood, 40mm hole, 600mm sp) 6mm Perforated Panel, 40mm/600mm (0.35%) 1mm Porous Absorbent, 3000 Pa.s/m2 50mm Air 170mm Porous Absorbent, 5000 Pa.s/m2 Rigid backing • Absorber 3 Rigid backing • Absorber 4 Rigid backing |
Absorber 1: Peak absorption at 31.2Hz. Damping=0.86 (medium)
Absorber 2: Peak absorption at 30.7Hz. Damping=2.21 (high)
Absorber 2: Peak absorption at 30.7Hz. Damping=2.21 (high)