As a radio news guy who’s spent a career encouraging journalists to sound like they’re talking, not reading – because people who sound like they’re talking about something they know have more credibility than people who sound like they’re reading something written by someone else – I assure you, Cecil, it’s more than just the accent that sets news people apart.
It’s inflection: It’s thoughtless emphasis on the wrong words. It’s a repeated tendency to end sentences “up,” instead of “down.” It’s what you might call “flight attendantitis.”
And it’s the writing, too – notably a failure to write with contractions and pronouns.
I’ve written and taught extensively on this subject, but it’s a neverending battle. More here: http://www.meyersonstrategy.com/2015/09/three-secrets-for-writing-and-reading.html