Global Parameters

Air temperature: 20°C
Air pressure: 101325 Pa

X Axis: Frequency
Range: 63Hz - 4000Hz
Scale: logarithmic
Resolution: high

Angle of incidence: 0°
Porous model: Allard and Champoux (1992)
Helmholtz model: Ingard/Allard

Absorber Parameters

• Absorber 1
1mm Perforated Panel, 3mm/6mm (19.63%)
30mm Porous Absorbent, 15000 Pa.s/m2
Limp Membrane, 2 Kg/m2
70mm Porous Absorbent, 5000 Pa.s/m2
Rigid backing
• Absorber 2
Rigid backing