Hello!
Thanks for the interest. Did you have a quick read through this article - it comes with example code doing exactly what you hear in that patch, in (garage) supercollider code (examples 05 and 06)
If anything is unclear, as questions away 
Hello!
Thanks for the interest. Did you have a quick read through this article - it comes with example code doing exactly what you hear in that patch, in (garage) supercollider code (examples 05 and 06)
If anything is unclear, as questions away