Global Parameters

Air temperature: 20°C
Air pressure: 101325 Pa

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

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

Absorber Parameters

• Absorber 1 (R38)
304.8mm Porous Absorbent, 6000 Pa.s/m2
Rigid backing
• Absorber 2 (R38 12)
304.8mm Porous Absorbent, 6000 Pa.s/m2
304.8mm Air
Rigid backing
• Absorber 3 (R38 24)
304.8mm Porous Absorbent, 6000 Pa.s/m2
608mm Air
Rigid backing
• Absorber 4 (R38 48)
304.8mm Porous Absorbent, 6000 Pa.s/m2
1216mm Air
Rigid backing