Formula for rhythmic delays on the OP-1

TL;DR: use speeds that are a factor 11 for delay. (0,11,22,33…99) and you will likely get good results.

Maybe this is useful/interesting to some people…I plotted out some of the delay speeds for the OP-1 and then figured out a formula to get a rhythmic delay speed based on your BPM.

Speed = BPM*11/24 - 11

so if your bpm is 120 you get
Speed = (120*11)/24 - 11
Speed = 1320/24 - 11
Speed = 55 -11
Speed = 44

or more simply (but rougher)
Speed = (0.46*BPM) - 11

If you try this out,
You should find, at the outermost circle, your delay will repeat every bar.

When you change the blue encoder every circle is a half, so as you tighten down the blue circle you will get 1/2, 1/4, 1/8, 1/16th 1/32 delays.

You can also get triplets by doing the calculation like this

Speed = (0.69*BPM) - 11


made a reference sheet to make it easier to dial in things… its fun to dial in multiple rhythmic speeds into the global effect memory 1 + 2 function and switch between them.


Actually for people who don’t want to do any math or look at a reference. the most simple thing you could do is choose a BPM that is a factor of 24… like 72, 96, 120, 144 and then use delay speeds that are factors of 11… like 0, 11, 22, 44, 99 and you will get rhythmic delays playing around with those numbers.

those delay numbers might work pretty well just in general. Maybe not for bpm speeds with a decimal number.