Reproduction error ε in the xy plane at z = 0 and mean amplitude u_opt of the sources when varying a parameter of the system: Dimension of the source array a (a), Dimension of the microphone array b (b), number of sources Δ_l (c), number of microphones Δ_m (d), height of the loudspeaker array h (e), angle of incidence ϕ (f). The other parameters remain constant and are given in Figure 1.