Applying waveshaping distortion inside the oscillator warp stage creates harmonically richer, fatter timbres

Serum 2’s distortion warp applies a waveshaper to the oscillator’s output at the synthesis stage, before it hits the filter. Unlike post-filter distortion, this shapes the waveform itself and changes which harmonics are present. Common modes include soft clip (gentle saturation, analog warmth), hard clip (aggressive clipping, brightens and adds harmonics), sine fold (folds the waveform back on itself, adding complex upper partials — characteristic of dubstep wubs and drum-and-bass presets), and tape/soft saturation for subtle warmth. The visual display in Serum 2 shows the shaped waveform in real time, making the harmonic effect legible.

Examples

Saw + sine fold warp → ‘linear fold’ waveform visible in the display → complex metallic overtones. Saw + soft clip → slightly warmer, fatter saw. Hard clip + high drive → aggressive square-ish distortion.

Assessment

Apply soft clip distortion warp to a sine oscillator. Describe how the timbre changes. Then switch to sine fold and increase the amount. Explain the visual change in the waveform display and the audible result.