@oid said:
Awesome find! BUT- the problem, as you have pointed out in this thread before, is that analog circuitry math does not translate well to digital, especially in the case of filters. https://archive.org/details/the-art-of-va-filter-design-rev.-2.1.2 was an eye-opener for me in terms of the limitations of our standard digital 1 pole algorithm.
The TPT filter suggested (which solipp employs in his ladder filter) solves a LOT of the problems we have been struggling with. However, there is no way to implement it cpu-cheap unless someone sits down and makes an external [tpt_lop~] object (with signal rate cutoff) for PD. I wonder if it could be hacked with [rpole~]...?