Hoping I can find some help on a sound issue

OK, this will be complicated. This is the address of the AudioBook Mastering paper.


Scroll way down into the Noise section, mosquito whine. Download that custom filter, open it and read it in a text editor.
The job of that filter is to suck away tones starting at 1Khz and working up in even numbers.

That’s the filter you need adapted to your frequencies/tones. I’m not a programmer and I can actually follow that.

Effect > Nyquist. Put your new program in there. I’m not on a computer, so that’s about all I can do for now.