#021 - Modulate Oscillator Detune with an LFO for Organic Movement

Static oscillator detune creates static chorusing - fine for a few seconds, then your synth starts to feel mechanical. Modulating the detune amount with a slow LFO creates micro-variations in pitch relationships that the brain reads as "alive" rather than synthesised. The effect is subtle but transformative - synths feel breathed rather than computed.

The technique

1. In your synth, route an LFO to the oscillator detune parameter
2. Set LFO rate to between 0.1 Hz and 0.5 Hz - much slower than you'd normally use
3. Set LFO depth so detune modulates ±3-5 cents around its centre value
4. Use a smooth waveform (sine or triangle) - never square or saw, which create audible pitch jumps
5. For richer movement, route a second LFO to a different oscillator's detune at a different rate (e.g. 0.13 Hz)

Particularly powerful on pads, atmospheric leads and long-sustain bass tones. Avoid on percussive synths and short stab sounds - the modulation cycle is too slow to register on sub-second sounds. The trick adds nothing measurable but everything perceptually. A/B against the static-detune version and the static one will sound flat and dead by comparison.