Having grown up in several different regions of the United States, I suppose I have something to contribute here. I picked up accents along the way. About a million years ago I won first place in a Valley Girl contest.
I use “accent” to refer to regional speech inflections and “dialect” to refer to local word choice.
Californians in general use a wider pitch range than most Americans. Their speech tends to be slow, but in moments of anger they may double their rate of talking. The effect is startling. The stereotypical Valley Girl accent is limited to the San Fernando Valley in northern Los Angeles where development after World War II brought a large Jewish population from the Northeast. The Valley accent combines extreme pitch ranges with nasal tones typical of older Jewish accents and added a strong attention to meter. Vals pepper their speech with fillers, “like” being the most common, for rhythmic effect. The accent spread well beyond its ethnic origins so that now an Asian-American or Chicano resident is as likely to speak it as anyone else. Its dialect borrows heavily from surfer culture. Mexican Spanish, which sounds leisurely and singsong, also makes its proximity felt.
In the Hampton Roads area of Virginia at least three local dialects coexist. Not surprisingly, they’re closely related to the region’s social history. White collar Virginians talk in lilting tones, lengthening their vowels only slightly. The sound is light and throaty. Working class Virginians speak from the chest. Their drawl is broader, more recognizably “Southern” to unfamiliar ears, and their speech is slower. Most of the African-Americans in the area use a third accent. The intonantions are distinct and the pacing is rhythmic. Vowel sounds dominate and a new listener may have trouble distinguishing the consonants. Most educated African-Americans in the region either adopt the more prestigious of the local white dialects or eliminate Southern regional tones from their speech. Sometimes in the lowlands one meets a Virginian from the hill country, Appalacian twang intact. North Carolinians who move to the area also sound different. Their drawl is much slower and more relaxed than any Virginian would use.
To the rest of the world, New York City and Brooklyn in particular often get stereotyped in the accent of one neighborhood: Bensonhurst. Bensonhurst is a stable Italian-American community where the local accent is broad, loud, affable, and rough. White Brooklynites from Park Slope and Brooklyn Heights often amaze outsiders by sounding “like they’re not from New York at all.” African-Americans from the Bedford-Stuyvesant neighborhood use more of the inflections of their Bensonhurst neighbors, but the Bed-Stuy accent blends enough Southern tones that the Italian influence escapes most ears. New York City’s other four boroughs have equally rich local sounds.
South Florida may seem devoid of regionalisms to newcomers. As a land filled with recently transplanted Northeasterners, New Englanders, and Midwesterners, the dominant sound often appears to be a Network Newscast Standard American blend. Pockets of deep Southern drawl persist in less developed areas. Unlike California, Floridian speech tends closer to a monotone. The dominant Spanish influence is Cuban, which sounds rapid and clipped. In some communities relaxed Anglo- or Franco-Caribbean tones predominate.
That’s enough for one post. For what it’s worth, in both France and Germany most of the locals thought I sounded English.