Airplane noise is a fascinating subject to me. It’s unlikely that even the best recordings of the sounds of the real plane will reproduce the sound of the airplane as you hear it when it flies over your house. There are so many things that affect the sound that you hear in real life, complex interactions between the sounds coming directly from the plane, and the sounds bouncing off the ground, buildings, trees, etc. Ever hear thunder from far away? It goes “crackle-crack-[boom]-crackle-[rumble]-bboom-rumble-rumble-boom-BOOM-bboom-rumble-rumble” Ever hear thunder from up close? It just goes “friggen BANG!” Did you know that 500lb bombs dropped on the sea two miles away produce the same odd broken up sound as distant thunder? Ever hear the sound a 20mm Vulcan gatling gun makes when fired from a jet zooming by? It goes “brrrrrrrrrrrrrrp-whooOOoooOoOoop.” Engine noise is affected the same way. The other thing missing is the power. Not simply volume, but the power to shake the ground under your feet. It’s all parts of the experience we can’t duplicate very well in FS.
