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DSP and Plugin Development • Re: Is there a chart or a paper that can summarize the common VA filters (Moog, Sallen-Key, ...) and their +s/-s?

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The TPT/ZDF stuff referred here means methods that guarantee time-varying stability, and some have suggested that looking at BLT literature is not worthwhile compared to the TPT/ZDF literature. I cannot find the paper now, but IIRC one central point is that one must use differential equations and not transfer functions. In this sense, literature that deals with transfer functions and time-varying cases is "wrong".
This was the paper:

http://www.solostuff.net/wp-content/upl ... v1.1.1.pdf
The reason the above didn’t work is because the transfer function that we derived
does not apply here because the system becomes a Time Variant system when
modulation is applied; therefore the derivation above is not valid. A Transfer function
only works when we have a Linear Time Invariant (LTI) system. A modulated filter is
not LTI.
Yes, so the result is a difference equation, but I've treated the models as DEs, because one does integration on circuit models that are usually some sort of dy/dt.

Statistics: Posted by soundmodel — Sat Aug 03, 2024 11:39 am



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