A master clock sends pulse streams that synchronize all time-based modules in a patch

In a modular patch, a clock module (or one module acting as clock) generates a steady stream of trigger pulses at a set tempo (BPM). Sequencers advance one step per pulse; LFOs sync to subdivisions; arpeggiators follow it. The clock rate is usually set faster than the beat — commonly 24 ppqn (pulses per quarter note, the DIN Sync standard) or simpler 1 ppqn — with dividers distributing slower divisions to individual modules. Sync keeps the patch coherent: without a shared clock, sequences drift out of time with each other. External sync (MIDI clock, Ableton Link, or DIN Sync) lets the modular lock to a DAW or external gear.

Examples

Clock at 120 BPM (24 ppqn) → clock divider: /6 = 16th notes, /24 = quarter notes, /96 = whole notes. Sequencer on /24, LFO on /6 → rhythmically locked modulation.

Assessment

Explain why 24 ppqn is the DIN Sync standard rather than 1 ppqn. Describe what happens to a multi-sequencer patch if one sequencer loses its clock connection. Name two ways a modular can sync to an external DAW.