Analogue systems

Hi folks !

For all those who don't know it, I remind them that the contest for
the "sound of the month" is opened until the end of june. There is
still nothing to earn except pleasure to share knowledge with the
other members :-)
Just a detail : this month, the topic is about drill sounds. The goal
is to make the best patch to reproduce that kind of sound with the
highest fidelity.
Reach quickly your knobs and patch cords and may the best patch win !

Arnauld