I noticed that some of you are working with spaces for performance in which sound is an important element.
Grasshopper can be an useful tool to easily visualize such a complex thing as sound. (which are just a translation into our favourite software of some mathematical models of this phenomenon!).
In the first place, Guillaume Meunier has developed an acoustic shoot that imitates acoustical raytracing:
This one could be an easy-to-use first guess for acoustic behaviour of a certain space before making a physical model for instance.
In the second place, a more complex one is the work by LMN Tech Studio (these guys are good!) that share their studies on acoustic reflexion and form-finding for a School of Music using the raytracing algorithm, which is also used for light simulation as you all know:
I hope this can be useful.
Please do not hesitate to contact me if you have any question or suggestion.