Hello there friends.
I’m trying to set up filters for my 15’’ quad for the first time in my life. So I’ve set up the RPM filters first.
Here’s the result. I’ve hovered for maybe 15-20 seconds and got these log data.
I believe the three “hills” are the three harmonics of the motor’s noise (I use tri-blades props), and it looks like the notches are kinda offset from the peaks of those hills.
So the big question is whether my filters setup is wrong and I should look into it once more, or something else is wrong, or maybe everything is fine, and those “hills” are something else, idk.
Please guide me to the solution. 
You only need the first harmonic. Disable the other two
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Seems like you set up fixed filters. You mentioned RPM, so do you have RPM telemetry?
I believe yes, because I can see escN_rpm in the Status tab changing as I add the throttle. I can also review the RPM logs after a test fly.
So the other two aren’t needed, or I set them up in a wrong way? The hills would still be there, right, so I’m supposed to tackle them somehow anyways?
No need to tackle peaks that are already post-filter below -50dB.
And they need to be dynamic and not static.
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Set up a dynamic RPM based (ESC telemetry or RPM sensors, whichever you have) for the first peak as @amilcarlucas said
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