I understood that yelling in the shooters ear for the sole purpose of distracting them during a layup/jumper could/should be considered unsporting and be penalized with a technical foul .
I have never given a tech for this before but I have given out plenty of warnings for screaming in the players ear . The screaming ranges from "BALL" at the top of their lungs in the shooters ear (Usually done by girls) to just screaming "AHHHHHHHHH" in hopes of distracting . I have even heard an occasional "Noonan"....ok maybe not that but that is what I would yell
If this isn't considered unsporting then evidently I don't understand the word very well !