is the duolingo danish course accents matches with the people living in the Denmark?
It is quite proper Danish so you will not meet many real life people speaking that way. You will hear that kind of talk in the trains though ;) Most Danish people - and especially in the Western part of Denmark - don't pronounce most of the words, so i.e. "Jeg vil have en hund" becomes more or less "Ja v ha en hun". Yet another reason that it's difficult to learn Danish. But anyway, there's lots of difference in how Danish people speak so you can't really find a voice that matches the variety.