About Auxiliary Effects). You can route any number of audio segments through the Modulation Auxiliary Effect. The Modulation effect applies globally to the entire sound track and is output in stereo to a pair of output channels, combining the effect on all inputted audio segments. You can adjust the amount of modulation that can be applied to an individual segment by using the Mod Amount slider.
Modulation Send is a soft effect that patches an audio segment to the Modulation Auxiliary Effect. All parameters for the Modulation Auxiliary Effect are set through the Auxiliary Effects panel (seeTo apply the Modulation Send effect on a segment:
This represents the percentage of the signal that will be split-off and routed to the Modulation Effect module.