Favorite movie, quick question. Anyone explain the Background Audio in the bedroom scene

Rating: 10/10 (14 February 2019)

The scene where Sophia morphs into Julie, to David's horror. There is audio in the back sounds like a womans voice, perhaps "zero three nine back three zero" 039 back 3?
Always finding new hidden details that I had previously missed. Definitely one of my favorite movies. I also love Cruise and Crowe working together. Seems like they have amazing collaborative abilities.
Is there a site somewhere that compares the different possible explanations side by side, walking through each scene from each perspective? Also, what happened to the discussion area here on imdb, I couldn't find the usual area.
Vanilla Sky is thought provoking, mentally challenging, beautiful, filled with a wonderful score of music, etc etc. Every year I find myself needing to re-watch it. Its so crisp and clean, refreshing, but yet so many theories can be simultaneously going on in the viewers head as they are watching it, making it confusing, unless you can convince yourself to stick to one explanation and try to hold that one in your mind as you watch. Great flick!