a 0.3[mm] "Orifice radius"
tp 1[mm] "Plate thickness"
Lx 1.4[mm] "Hole to hole x-distance"
Ly 2[mm] "Hole to hole y-distance"
Lz 1[mm] "Air layer thickness"
fmin 20[Hz] "Minimum study frequency"
fmax 20000[Hz] "Maximum study frequency"
dvisc 220[um]*sqrt(100[Hz]/fmax) "Minimum viscous boundary layer thickness"
sigma a^2*pi/(Lx*Ly) Porosity
c0 343[m/s] "Speed of sound"
rho0 1.2[kg/m^3] Density
p0 1[Pa] "Incoming mode"