Chiguete
Experienced
it might be triangle, the TC dude explains that a triangle wave would make that same sound as a square wave if it's attached to delay time, since it only changes the delay time at the top most and lower most peaks of the waveform, since the slope is smooth in between the delay time doens't change or something, the audible effect sounds just like a square wave, alternating basically between two pitches
WOW that's an awesome video! I must check the hole video now