Technically, yes. The game will launch without it. Practically?
: It contains the .xwm or .wav audio files that make up the spoken dialogue for every character in the English version of the game. Skyrim - Voices-en0.bsa
A deep dive into the world of Skyrim's audio files! Technically, yes
Without it, the world goes silent, and subtitles flash by instantly. 🛠️ Common Uses & Fixes the world goes silent
Instead of having thousands of loose sound files, scripts, textures, or meshes scattered across your hard drive, Bethesda bundles them into .bsa files. This accomplishes three critical things: