Clock

Usually refers to the main rhythmic pulse in a system. Often, the clock pulse is much faster than anything it might drive, such as a sequencer or LFO. The most common clock rate is 24 ppqn (pulses per quarter note), as is the case with MIDI clocks and DIN Sync. However, a trigger that drives a sequencer forward one note at a time may also be called the “clock” in a system. Indeed, there are modules that create divisions and multiplications of the main clock to generate new clock signals with a relationship to the main clock.