What is origin of the "Transatlantic Accent" and was it spoken by movie stars and announcers solely, or was it commonly used among certain classes as well?

by sshanky

I'm referring to the famous radio voices of the 30's and 40's.

Searocksandtrees

hi! FYI, you might be interested in posts in this FAQ section (link on sidebar):

Trans-Atlantic accent

and this more recent post Why was the transatlantic accent popular in older Hollywood films? Why did it decline?