Global Parameters

Air temperature: 22°C
Air pressure: 101325 Pa

X Axis: Frequency
Range: 20Hz - 500Hz
Scale: logarithmic
Resolution: medium

Angle of incidence: 0°
Porous model: Allard and Champoux (1992)
Helmholtz model: Transfer matrix

Absorber Parameters

• Absorber 1
Rigid backing
• Absorber 2
Rigid backing
• Absorber 3
15mm Slotted Panel, 40mm/300mm (13.33%)
50mm Air
228.6mm Porous Absorbent, 5000 Pa.s/m2
Rigid backing
• Absorber 4
25mm Slotted Panel, 30mm/400mm (7.50%)
50mm Air
100mm Porous Absorbent, 14500 Pa.s/m2
Rigid backing