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The far field generated sound by a vortex interacting with a semi-infinite rigid wedge is studied in the time domain. The theory of vortex sound is used to calculate the far field sound, under the assumption that the distance between the aerodynamic source and the edge of the wedge is acoustically compact ky0<<1. Analytical expressions are presented for different cases: i) The self induction of a point vortex around the wedge, ii) the convection effects induced by the free stream flow with velocity U and angle of attack $\eta$ and iii) regions with a Gaussian distribution of vorticity. The presented models are compared with existing solutions in the literature, and conclusions regarding the physics of the problem are drawn.