In Fight Club, Helena Carter does a pretty damn good American sound. In fact, I had no idea she wasn’t American until I did some research on her.
Having the dubious peasure of working in a field which requires travel throughout the US, and some of Canada, I can assure anyone that the US is flooded with different styles of speech. In Ohio itself, where I grew up, I could tell at least three. One was the Ohio version of a southern sound, which is decidedly different than what I have heard in North Carolina, Georgia, and definitely Mississippi. There was the Middle Ohio sound, which is the suburbs around Medina, Akron, etc. And people from Cleveland had their own sound, too. No doubt there were more, but Ohio never peaked my interests as far as travel goes.
I would disagree that the standard Amercian sound portrayed on films and television is a Western sound. In fact, I can spot a Southern Californian within a few moments of conversation(never mind the valley girl connotation). I think the non-southern sounding Midwest is the “default” sound.
I think, *wishbone you do a disservice to the Massachusettes sound. There is a decidedly distinct New England dialect in general, with differing accents on top of that. I think the difference between South Boston (southies!) and the northern suburbs is very clear…in fact, almost to the point of humorously clear. I can’t tell whether someone comes from Somerville, Cambridge, or Woburn but for Eris’s sake hand me someone for Dorchester and I’ll know it.
I assume, however, that this is larely because I’ve lived in these areas. It would not suprise me in the least to know that all heavily populated areas have similar patterns.
Interesting anecdotal comment:
I have the distinct pleasure of working with a lady from Lithuania. She recently returned from a vacation to Montreal, Canada, and informed we that understanding that sound of English was far, far easier than understanding my generally midwest sound (though the New England is slowly creeping in, after only a year!).