"Organic" Sound Production

[Tunerguy21]

This has been on my mind for quite a while and I thought I should present it to you all. Would it be possible with today's technology to have sounds created in games and such to be made organically-for lack of a better word-rather than synthesized? In other words, a turbo whistling not because of an artificially produced tone being programmed to cut in but because of the turbo actually in operation, or a tree branch snapping because it is actually breaking. This is all hypothetical, of course, and I'm not asking for feasibility so much as possibility.

Also, if this is in the wrong place then please feel free to have it moved. I wasn't exactly sure where to put it.