Eurocom Neptune 3 - Manual (Page 254)

Modules
7 - 68 Sound Blaster Audio
7
Voice FX
Click in the box to enable Voice FX and click on the sliders to adjust the settings.
Select the mode required from the dropbox, and click on Test to hear the playback
of the effect.
Figure 7 - 55
Sound Blaster X-Fi 3
Voice FX