Transmission coefficient for one step embedded in a stably stratified medium, in an inclined box with Θ = π/ 4, for different rotation frequencies a) Ω = 0; b) and c) , as a function of frequency and perpendicular wave number. The white and dashed red arrows indicate frequencies ω = f and ω = 2Ω, respectively. A set of bands depart from f = 2ΩcosΘ (= here) corresponding with a resonance with short-wavelength inertial waves. The transmission coefficients are calculated over a frequency range ω₋<ω<ω₊, calculated such that both the incident and transmitted wave are propagative.