Never heard that word before either, so looked it up at
http://dict.leo.org. This is what I found:
....a student of mine recently described the wedding of Charles & Camilla as ''not as orotund as the Charles/Diana affair.'' (LEO provided the translation of pompös). I had to confess I had never seen the word, but now discover it can be used for the voice (full, loud and grand, or to describe speech or writing (boastful or self-important, pompous). From the Latin ore rotundo, ''with rounded mouth''....
Does this bring us closer to your question? Were you talking about voice control? Then this might be helpful:
Search for 'Silent Hunter III Voice Command v2.4' on this page:
http://www.subsim.com/subsim_files05/patches2005.html
I hope this helps!
Cheers
Kai