- Edited
Olivier hi Olivier, ST3 BPM does not know which is beat 1 ,2,3 or 4 it is purely a tempo pulse beating to the speed you choose it to beat to, so it is a rough guide to get you in to the ballpark , so you simply see it you adjust your speed of performance that will guide you so when you hit start it will sort of work in with your programmed song, because there is a slight delay of the start if you use foot control you need to slightly preempt the exact start and as long as your backing starts immediately it does a reasonable job, its much better than having no guidance at all, so its up to you on which flash you start as it does not matter to ST3 its determined on which beat you programmed the the start of the backing track.
Once you introduce a definite count it locks you in and would be a distraction if you went off beat so its better not to identify the flashes as its very limitting when freely performing.
Especially if you change for example 4/4 to 3/4 etc.
Hope this helps in some way.
Cheers Damir