Whoever recorded those messages seemed a bit aroused about the right door being open.
Sounds like the kind of intonation you get from being in a recording studio having your diction of four words picked apart so much they stop being words and suddenly you can't even say them in a neutral tone. "clipped vowel on 'right'" "emphasize 'door'" "nice long vowel on 'open'" and then you end up with... whatever that was.