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RESONON

Change a Pattern Every Cycle

When the next pattern depends on more than one value, compute it in a callback. on_cycle runs it once per cycle with the cycle number, and what it sends lands on that cycle.

Send a pattern from a callback

Section titled “Send a pattern from a callback”
use "std/instruments" { SamplerMelodic, Kit };


let lead = AudioTrack("lead");
lead.set_instrument(SamplerMelodic(Kit("keys")));


on_cycle(fn(cycle) {
    let note = 60 + (cycle % 12);   // one step up each cycle, then back down
    lead << Sequence(#[note]);
});


PLAY;

Seed any random choice with cycle, so the result is the same on every playback — see Make a Reproducible Random Choice.

Stop the callbacks

Section titled “Stop the callbacks”

off_cycle() removes every callback.

Start on an external clock

Section titled “Start on an external clock”

When resonon follows a MIDI clock, call prime_cycles() before the clock starts, so the first cycle is not empty — see Sync to a MIDI Clock.

Section titled “Related”