w_tube 2[in] "Tube width"
h_r (2.8+1.4+1.08+0.72)[in] "Resonator height"
h_slit 0.04[in] "Slit height"
w_slit 0.05[in] "Slit width"
h_in 24[in] "Inlet height"
y_in h_in+h_slit/2 "Inlet location y-coordinate"
h_tube h_r+h_in+h_slit "Total tube length"