Hi, I am curious about the process of creating a realistic/realtime sampled engine sound for racing games. More specifically, how to create an engine sound that reacts to the acceleration and deceleration of the vehicle. How is this done in major games? I have seen it crapily done in flash games, etc. with basic FM synthesis programming (play wave at A440, increase frequency with acceleration...) But how is this done with sampled engine sounds in games like Need For Speed, etc?