[sdiy] Q-Enhancement with Cascaded Bandpass is Modest
Bernard Arthur Hutchins, Jr
bah13 at cornell.edu
Wed Sep 11 04:58:33 CEST 2019
A week ago (Vocoder thread), I said, based on my memory of examining the notion many years ago, that the idea of cascading two identical BP filters to sharpen Q was distressingly slow.
If I wrote this up in the distant past, I can't find it. Anyone?
I did it again:
and found cascading multiplies the original Q by 1.5537, for all Q. Did I make a mistake?
Nice-looking bandpass - just not much sharper Q-wise.
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