Doom Enhancement Project (DEP) is a collective name for mods I created or compiled for Doom, Doom II and Final Doom games, based on some existing Doom texture packs and projects, with my own edits and replacements. It introduces new graphics and audio effects, but no gameplay change.
This pk3 adds custom sound effects in the game, partially replacing existing ones. These include sound effects for picking items, player footstep sounds, player landing sound, and monster active and pain sounds.