Hi
for everyone struggling with instrument design, Gwem (maxymiser author) made a tutorial on youtube
https://www.youtube.com/playlist?list=P … tCt2dHi9_Z
it features also explanations about why those effects exists and their limitations.
You can also check out my talk about the ST and it's chiptunes https://www.youtube.com/watch?v=yLDtiTS4JLg
Georges