Wavetable synthesis in Serum
A technique popularised by the PPG Wave, and more recently by Native Instruments Massive and now Serum, wavetable synthesis is an expressive method of sound generation for creating complex, morphing timbres with minimal effort – think morphing ‘growl' basses, shimmering pads and animated FX.
A Serum wavetable oscillator is comprised of up to 256 singlecycle waveforms, called frames (or ‘subtables'), strung together in a sequence. Playing back a single frame will output a static oscillator tone, much like a regular subtractive oscillator; but moving or modulating the playback position within the wavetable will scan through the various frames. In Serum's case, scanning through this collection of waves is as simple as moving or modulating the WT Position parameter by hooking it up to a macro, envelope or LFO.
Although both of its main oscillators come packed with hundreds of preset wavetables to keep you occupied, Serum also gives you the ability to edit these on a per-cycle basis – and even create your own wavetables from scratch – via the Wavetable Editor, accessed by clicking the top-right pencil icon in Osc A or B's waveform display.