Last week Aaron and I were raving it up– he with his Doepfer, I with my microKorg. We were frustrated, however, by our difficulty getting the microKorg to stay synced up. After much investigation, I unearthed the cause and solution to our problem.
When the microKorg’s clock is set to EXT, it accepts MIDI clock from the master. MIDI clock is a series of ticks sent at regular intervals. The synth can calculate the master tempo from the time between ticks. But MIDI clock contains no information about bars and beats. (Other MIDI protocols do, but the microKorg does not accept them as far as I can tell.) So the synth matches its tempo to the master, but it has no knowledge of how to line up the first beat with the master. The arpeggiator might start on the beat just by chance, but it’s just as likely to start halfway between beats.
After much investigation, I discovered that you can force the microKorg to jump back to the first beat in time with your host. Details after the jump.