Multi-osc, detune, unison

▸What it is

Stacking two or more oscillators on the same note and shifting them slightly out of tune creates a thicker, wider sound than any single oscillator can produce. Tiny pitch differences between oscillators cause slow beating between their waveforms — the chorus-like motion that turns a thin saw into a supersaw or a hollow square into a wide pad. Unison takes this further: multiple voices per note, spread across the stereo field, each detuned a little. The more voices and the wider the detune, the bigger and more diffuse the result — at the cost of pitch focus. Pull detune all the way down and the oscillators lock back into a single tone.

▸Questions

• How much detune is too much?

  5–15 cents is musical and tight; 20–40 cents is wide and dramatic; past that the pitch starts to feel uncertain. Pads tolerate more detune than basses.

• Why do detuned saws sound so big?

  The frequency content of multiple saws beats against itself across the whole harmonic range, not just the fundamental — that is perceived as fullness and width.

• Does unison work for bass?

  Yes, but keep it narrow. Wide unison bass loses focus and clashes with the kick. Two voices, slight detune, mostly mono is the sweet spot.

▸In the curriculum

First taught

PD1 · Stack & detune — Layer two oscillators, widen detune. Part of the Pad track.

This concept is taught once and is not directly reused in another lesson.

▸Related concepts

Concepts that share a lesson with multi-osc, detune, unison: