I’m using FMOD to create aircraft sound for X-Plane. Even if I have doppler enabled, one of the problems I have is the lack of a comb filter to be able to properly simulate the fly-by effect (see: https://www.youtube.com/watch?v=8ZXQOOAVk4E)
I had partial success using the Flanger filter, using a fixed rate and modulating the depth and mix according to distance; the problem is the rate is dynamic, so it’s always oscillating. And if I set rate to zero, the flanger doesn’t work at all (it seems it’s a sine wave starting at zero). So I set the rate to something like 0.02hz which sometimes gives me the effect I want and sometimes not (depending on where’s the oscillator at that moment).
Another alternative I tried is to simulate a comb filter using a set of parametric EQ’s with a very narrow bandwidth and modulating the frequency as a function of distance; but the amount of bands I can program this way is low, it’s very cumbersome to do and it doesn’t work that great.
So, is there ANY way to simulate or add a comb filter?
I’m using 1.08.18, as the simulator itself is stuck at that API version too, so I can’t use anything more modern.
Thanks a lot.