Once met a very cute girl and from her accent I asked her if she was from Brooklyn, The Bronx or somewhere. She said she was from New Orleans. As if she wasn’t cute enough, that voice made my heart skip a few beats!
New Orleans saw a huge wave of Italian, Irish, and German immigration in the 19th/early 20th century, so the accent does have a similar influence to the old outer-borough New York accent. The biggest difference is that I’ve never heard anyone from Bensonhurst or Morris Park say “where y’at” like they do in NOLA.
http://www.geocities.com/yvain.geo/dialects.html
Look at region #24, and look for YAT.
I know a woman from NO, and I understand your question.