Have you used either one?
To me, a translator is one that translates from a source language to a target one. The translation is done from something in print, audio or visual.
An interpreter, on the other hand, produces the translation simultaneously between the person or persons speaking.

What's is your understanding on this topic? Please leave a comment.

Because I have hearing problems I prefer translations rather than interpretations, unless they are for the family, not for business.