Generalmusic 271221 Owner's Manual page 34

LFO DEPTH: This control is used to set the amount of "vibrato"
or modulation applied to a sound. If the current sound includes
some type of modulation or vibrato, you can use this slider to
either increase, decrease or completely remove the effect, (by
setting the slider to minimum).
Since this slider can be used to either increase or decrease the
LFO depth in the original sound, the original LFO depth can be
restored by setting the slider to its centre position.
LFO RATE: This slider can be used to adjust the speed of the
"vibrato" or modulation in a sound. It is designed to be used in
conjunction with the LFO DEPTH slider.
Since this slider can be used to either increase or decrease the
LFO rate in the original sound, the original LFO rate can be re-
stored by setting the slider to its centre position.
1•10 User Guide