Delay Tap Display

A delay's echo train on a time axis: a muted reference pip for the dry hit, then one pip per repeat at the moment it arrives and the height it arrives with, fading as well as shrinking so the tail stays readable. Two lanes turn it into a ping-pong view — left grows up from the midline, right grows down, and the first repeat's side comes from the shipped graph rather than from the display. Supply a tempo and it draws the beat grid the repeats are landing on, or missing.