Fuz Ro D-oh - Silent Voice Mod
MODA SKSE64 plugin that adds support for unvoiced in-game dialog,
Fuz Ro D’oh addresses this issue by forcing the game to use a single set of silent voice files for any unvoiced dialogue the game might encounter, thereby relieving the mod author the arduous task of generating and bundling individual voice files.
Third party mods that add new NPCs and quests often do not come with their own voice acting.