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 (4" OC 703 3" Air)
51mm Porous Absorbent, 27000 Pa.s/m2
51mm Porous Absorbent, 27000 Pa.s/m2
76mm Air
Rigid backing
• Absorber 2 (2" OC 703 5" Air)
51mm Porous Absorbent, 27000 Pa.s/m2
127mm Air
Rigid backing
• Absorber 3 (6" SandS 1" Air)
76mm Porous Absorbent, 15000 Pa.s/m2
76mm Porous Absorbent, 15000 Pa.s/m2
26mm Air
Rigid backing
• Absorber 4 (3" SandS 4" Air)
76mm Porous Absorbent, 15000 Pa.s/m2
102mm Air
Rigid backing