Sammi Grant is a dialect coach and voiceover artist for television and theater. In this video, she demonstrates her expertise in speaking English with several different accents, including Irish, Scottish, German, the American midwestern accent, and the Transatlantic accent, an accent invented to sound both American and British simultaneously.
No, really. That’s not a real accent. It’s a now-abandoned affectation from the period that saw the rise of matinee idols and Hitchcock’s blonde bombshells. Talk like that today and be the butt of jokes (see Frasier). But in the ’30s and ’40s, there are almost no films in which the characters don’t speak with this faux-British elocution-a hybrid of Britain’s Received Pronunciation and standard American English as it exists today. It’s called Mid-Atlantic English (not to be confused with local accents of the Eastern seaboard), a name that describes a birthplace halfway between Britain and America. Learned in aristocratic finishing schools or taught for use in theater to the Bergmans and Hepburns who were carefully groomed in the studio system, it was class for the masses, doled out through motion pictures.
This short video has some more examples of the Transatlantic (or Mid-Atlantic) accent: