Rockit 8 Bit Synth: Filter External Audio Input Sample

I finally got around to testing the external filter audio input.  It had been sitting there untested for a couple revisions.  Other priorities generally carried the day, but, as I get close to the end, even the little things need to be tested.  I'm glad to say that it works as expected.  It's actually a lot of fun to run new non-synth sounds through the filter.  Letting the LFO run on filter parameters generates fun wah sounds and sweeps and stepping through the different filter types is interesting.  I'm going to muck with the filters one last time tonight once and for all to see if I can get any little improvements.  I'd really like to get the maximum low pass frequency cutoff higher, but it comes at a price of audible frequency steps near the top of the frequency range.  I've changed values in there a dozen times and I keep coming back.  This will be the last time.  Anyways, here's a sample of what it sounds like to run sounds through the filters. I run through the three filter types first, just moving the filter cutoff up and down and then I start using the LFO to modify the filter parameters.  Make sure to at least skip towards the middle to hear it get really crazy. I apologize for the noise. As I've mentioned in another post, it's a problem that I'm aware of and fixing in the final revision.

External Filter Input Audio Sample