Michigan not in the midwest? At least the Wikipedia article is pretty clear on that.
http://en.wikipedia.org/wiki/Midwestern_Unite...I think the 'standard' American pronounciation of 'human' is /hjumEn/, at least that's what the m-w speaker does. Personally, I would also think /jumEn/ sounds strange, but I'm not a native. The vast majority of the speakers (including me, I can't pronounce /hj/), though, palatalizes (i think that's the correct term) the /h/ which sounds somewhat like the German ch in ich. To quote wikipedia,
http://en.wikipedia.org/wiki/Voiceless_palata...> In some dialects of English, the sequence /hj/
> is sometimes realized as the voiceless
> palatal fricative, via coalescence, a type of
> assimilation. For example, human (/ˈhjumən/ might
> be realized as [ˈçumən]). However, there are
> no minimal pairs for /hj/ and /ç/, so
> the voiceless palatal fricative is not a
> separate phoneme in English.
The reason why whine and wine are different for some speakers is another one; they historically had different phonemes, but the distinction has been lost for most speakers. I don't think I can even produce the [M] sound and I think it is different from /hw/.
http://en.wikipedia.org/wiki/H-cluster_reductions