Max MSP Tutorial 01a5: Building a simple step-sequencer [5]

[ihatekhomeini]

I wish you would explain how to convert milliseconds to BPM!

[MUST1002]

@ihatekhomeini There are 1000 milliseconds in a second; thus there are 60000 milliseconds in a minute. Thus dividing 60000 by the number of beats you want to fit into that time (i.e. the bpm) will give you the necessary interval in milliseconds between beats.

Here I'm dividing again by 4 because there are four 'subbeats' per beat.

And that's it, really. Thus for 120bpm:

60000÷120 = one full beat per 500ms

(then 500ms÷4 = one subbeat per 125ms (making four subbeats per beat))