Global Parameters

Air temperature: 20°C
Air pressure: 101325 Pa

X Axis: Frequency
Range: 20Hz - 20000Hz
Scale: logarithmic
Resolution: medium

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

Absorber Parameters

• Absorber 1 (perfed board)
16mm Perforated Panel, 8mm/45mm (2.48%)
270mm Porous Absorbent, 4500 Pa.s/m2
Rigid backing
• Absorber 2 (slats)
25.4mm Slotted Panel, 1mm/100mm (1.00%)
100mm Air
Rigid backing