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
Rigid backing
• Absorber 3
Rigid backing
• Absorber 4
Rigid backing