PSD of the disc-integrated projected velocity signal, v_obs, obtained from the simulation in the upper radiative interior (r/R_★ = 0.80, left column), averaged in the convective envelope (0.88 ≤ r/R_★ ≤ 0.97, middle column), and close to the top of the simulation domain (r/R_★ = 0.97, right column). The PSD obtained for the Full model is shown at the top and the EnvCZ model PSD is at the bottom. The regular pattern of the ℓ = 1 modes is highlighted with vertical dashed grey lines and that of the ℓ = 2 modes with the vertical dotted blue lines.