Formula-generated wavetable

A formula-generated wavetable is a table whose frames are computed from math — expressions evaluated per sample and per frame — rather than drawn, recorded, or imported.

Formulas can sum chosen harmonics, shape phase, fold in noise terms, and parameterize everything by frame index, so one short expression yields a family of related frames that would be tedious to draw by hand. Dedicated formats exist for exactly this — u-he's .uhm scripts and Surge XT's Lua .wtscript files — and the same job is routinely done in notebooks and signal-processing tools.