My students and myself have had some good luck with the open source and free software package Acoular. We used it to try and visualize the acoustic source distribution within a tornado. It worked fairly well, but of course the technique is dependent on the quality of data used. This is generated by CFD simulations usually. CFD for acoustic analysis needs to be high-resolution and have small time steps. This is rather complicated by the fact that these simulations take more time than others. At the end of the day, the program produced some aesthetic images.