Thanks! Tried adjusting different sound settings on Windows, they don't help. Altered various levels in the Audio menu, still not sounding right.
While testing it, I found something else odd with it. Talked with Jane Elson (first NPC you meet when docking with the Groundbreaker), and she was muffled when I looked at her while speaking. If I turned away while she's speaking, it sounds normal/correct. If I'm turned 180 degrees away from her, it goes back to being muffled. Again, music and sound effects sound normal, only voices are affected.