Dynamic Sound for GTA v?

I've been searching if its possible to make sirens have a more realistic and dynamic sound (I didn't find anything at all). I mean I  cant be the only one who feels like most sirens sound like a sound file played into your headphones without any calculations about the environment (echo). In all videos of Emergency vehicles responding, as well as in real life sirens have a dynamic sound cause the sound bounces of the walls of the buildings within a city, or the terrain depending of where you are. So i am wondering, is the game lacking a "mechanic" that calculates these environmental factors? I mean, i have observed that there is an alteration in sound in various occasions like when you are inside a tunnel. That also counts for all other sounds in the game of course (gunshots, Engine sounds anything). Any opinions on this?