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Filters compared

I’m looking at building a simple filter system modeled after an analogue filter. There seem to be a number of them that take the same inputs, and as such they would effectively be swappable/interchangeable with each other. My only requirements is that both the cutoff and the q need to modulate with an audio signal. Beyond that, I’m open.

Which ones are good places to start with? Are there any with unique characteristics? Any to avoid?

Check out the Csound Filters Wobble instrument in the Misc examples. That lets you compare a fair few Csound filters with modulation of the cutoff. One of my all time favourites is the lpf18. Of the more recent ones, I quite like the K35_lp. Each to their own I guess.