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DSP and Plugin Development • Sallen Key - LP/BP implementation - how to obtain HP?

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Hi folks,

I'm trying Sallen Key topology those days, using this implementation: https://github.com/janne808/kocmoc-rack ... y.cpp#L206

But while it seems to works almost good for LP and BP (I say almost because change oversampling factor or decimator order move the cutoff response, which is not so great), there isn't any output for HP mode (in fact, input_hp and input_hp_t1 are not used in the recursion).

Can in your knowledge this be extended also to HP? Tried somethings like LP+input or LP-input, but the response seems weird and not a "very" HP.

How would you manage this?
Thanks for any tips!!!

Statistics: Posted by Derozer — Sat Feb 10, 2024 2:17 pm — Replies 4 — Views 77



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