Really?, gonna try this.
EDIT:
Didnt worked for me.
How do you want to mod it without getting the voice actor of Codworth...?
Audio editing magic. take different syllables from different files and combine them into a new name or word.
I'm not sure if this will sound very well... I would imagine it would sound very artistic.
I know what your thinking and it's possible the inflection will sound odd but i think it's possible to make some very good ones keeping the syllables in thier original position. plus some will be very easy and will sound original when combining 2 names into one like Mary Ann or Bobbie Joe, etc.