“Ear fatigue” can be caused by many different things. I want to refocus on one that I’m hearing way too much – the “one set speed” delivery.
It doesn’t seem to matter if the song is “having a stroke” fast or “worm crawling” slow, the air talent is at one speed all the time. No variation. It’s boring. That person is a time filler, rather than a true personality.
(To be fair, this is often the result of a P.D. talking about “momentum,” which is a different thing, and isn’t dependent on speed.)
Anyway, in music formats, the cure to the “one speed” disease is really easy: Your delivery should match the Pace, or the Mood, of the song you’re talking over or coming out of. (Ideally, you’d do both.)
And for my Talk radio friends and clients – you should also watch falling into one set speed. Different subjects require different deliveries. They have a best pace or vibe, too.