Its not just reverb, its dynamic sound. Its alot more than just reverb and delay added to some parts of the map (i.e. setting inside buildings to have more reverb than outside etc)
Although this is a nice way of making a dynamic sound illusion i fear its not as good as dynamic sounds it self.
What we really need is for the arma sound engine to enable stereo support (thats not in .ogg format)
Just imagine 24-bit Stereo .wav was the minimum for Arma3 sound engine. It would be the best thing to happen to arma since......