$5.00
Glow Up is a spectral shaping module which detects prominent frequencies in its input signal, and boosts the first, second and third harmonics above those frequencies by a user-controllable amount.
The effect is a little like an octave-up pedal, except that everything is done through spectral shaping.
This module introduces some latency into processing, as a consequence of the Fast Fourier Transform algorithm used to separate out frequency bands. The amount of latency is user-adjustable, and an LED indicator shows when more latency is needed to prevent audio glitches.