Hey guys, being a drum machine fanatic and owning quite a few of the classic drum machines (606/707/808/909, SP1200, MPC60, MPC3000, MPC2000, OT, Tempest, TR-8…) I’m pretty familiar with this topic so here is my input. There is definitely a unique swing feel on most drum machines. I am disregarding things such as velocity, sample truncating, analog circuitry etc… which indeed can influence the groove. But focusing purely on the swing function, there are 3 main factors that give it a specific feel:

  1. PPQ resolution. it’s mathematical, the lower the PPQ, the more coarse the swing. the higher the PPQ, the more subtle it gets. This is why the SP-1200 (24PPQ), TR-909 (24PPQ), Linndrum (48PPQ) have this very jumpy prominent swing (which i personally love). On the other en of the spectrum, you’re DAW with it’s super high 960 PPQ will be a lot more tame when applying swing.

  2. Jitter. as the innerclock litmus test reveals, every drum machine (or sequencer really) emits a varied amount of jitter. jitter can make or break a midi clock’s timing. You want as little as possible. This is why the early MPC’s feel tighter & groovier then the later Numark series because the jitter is very low.

  3. Swing algo. Not every box swings the same notes, Roger Linn breaks down his algo in the attack mag interview. Generally speaking though most boxes use the same. TR-8 has a really cool feature where you can go into negative swing for a radically different swing algo…

And There you have it, that’s about it! by the way, what I would like to see on modern units (such as elektrons) is the ability to lower the PPQ to give a coarser swing… The groove templates in Ableton sort of emulate that…

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