Collecting audio

[joevenzon]

That doesn't really make sense -- surely part of the reason for recording the rev sounds at different levels is because it is a sound that does not linearly scale in pitch and volume; 4k revs will not sound like 3k * 4/3.

So, the way the game uses the multiple RPM sounds is by crossfading between the nearest two RPM sounds. So if you're at 3500k, you'll get 50% gain on the 3k sample (pitched up by 3500/3000) and 50% gain on the 4k sample (pitch down 3500/4000). Unfortunately, if the 4k sample is actually 4050 rpm, then when you're at 3500 playing the 3k pitched up and 4k pitched down at the same time at what should be the same pitch, the 4k sample actually sounds a little higher, and so they don't mix well. It ends up sounding like two engines. Load up the M7, rev to 5500, and you'll hear what I mean.