I'm currently trying to analyse multi-channel audio recorded in a cave (reverberant conditions). I'd like to check how well my bat calls are being localized, and the extent to which reverberance contributes to error in estimation of call duration.
I've tried simulating reflections by adding a synthetic signal over itself at various delays and amplitudes. This works to an extent, but is cumbersome and not always physically correct.
What methods/packages are out there to simulate more complex sound propagation?