Deeper Male Protagonist Voice is a mod for the popular game franchise, Fallout. The purpose of this mod is to alter the voice of the main protagonist, Preston Garvey. It has several choices of deeper-sounding modifications to the male protagonist's voice. It does not include changing the dialect, the accent, the pitch dramatically, or other aspects of the voice, including how gravelly it sounds. This is done by applying different sound effects to his speech. 

The result is that his voice becomes deep, rough, and heavy. There is a large difference between the original voice and the modified one. The most noticeable change is the pitch.