The reduction of noise pollution has become a significant challenge in recent years. Noise exposure in areas close to railways and airports has been in fact closely associated with several discomforts and health conditions, prompting the World Health Organizations to implement regulations and restrictions on the noise emitted from transportation. This work focuses on the aerodynamic noise generated by a cylinder in a uniform flow, whose phenomenology replicates the one of elongated bodies with bluff body geometry, such as airplanes landing gears and high speed train pantographs. A method that has proven its efficacy in mitigating the shedding tone generated by bodies with such geometry involves the application of a porous coating on the surface of the body, which stabilizes the wake of the body by expanding the flow recirculation region downstream of the body and shifting downstream the formation of the vortex street.