Unlike old, hastily made dubs, this new version comes from a professional studio. The audio is crisp, the background music (by Philippe Chany) is perfectly mixed, and the sound effects—from the thwack of a Roman legionary being punched to the splash of Obélix falling into the Nile—are pristine.
If you're looking for a Tamil dubbed version of the movie, here are a few suggestions on where to find it: asterix and obelix mission cleopatra tamil dubbed new