Mm - hmm.
Like , you estimate the edge of square and then you do a f smoothing across the frequency so that those zeros get , like , flattened out.
Mm - hmm.
And that doesn't seems to be improving by trying it on the first time. So what I did was like I p did this and then you  I plugged in the  one more  the same thing but with the smoothed filter the second time.