looking at your sigfile, the textknob’s choices are both set to 0, which send 0 to picodelay’s delayamt.
I just measured picodelay, and unless I did something wrong, it looks like setting picodelay’s delayamt to 0 somehow gives it a negative delay of one sample. delayamt 1 = no delay. delayamt 2 = 1-sample delay.
so your textknob’s choices should be set to 1 and 2, but it still doesn’t seem to work. I don’t do filter design so I can’t help with the implementation.
I’m not sure if the C++ API is still offered. You may want to send an email to support.
