Is 公庫 actually pronounced like ごうご
I was listening to the pronunciation of 公庫 on http://nihongo.monash.edu/cgi-bin/wwwjdic, and to my surprise, even though the hiragana is こうこ, it totally sounds like ごうご. I'm very confused.
I have encountered cases like this for numerous times, where こ is pronounced ご (e.g., try listen to the pronunciation of ここ on that same site, the second こ totally sounds like ご to me).
I wonder if the pronunciations on that site are actually accurate? If so, is that ko or go? If it is ko, then why it pretty much sounds like go?
Thanks for the help in advance.