World Series Buzz

I just turned off Game 3 (in St. Louis).
DirecTV is sponsoring the blimp (so I know there is one) but there is no "electric razor" noise in tonight's broadcast.
I'll tune in Game 6 (if the series returns to "Baston")
and hear what I can hear!

I did not hear any buzz on Sat game via Uverse, it sounds fine

I turned the game back on just after 8 p.m. (PST) and was hearing the buzz.
This has to be some kind of control signal used for setting microphone volumes, dynamic range etc..
Another possible is that it's some kind of "dithering" or digital artifact (the whole bloomin' broadcast is digital, right?).
I guess I'll just wear earmuffs. This should mitigate the buzz so I won't be reminded how crappy living in the future is.

Vuvuzelas?

Hey Dweller, I'm not hearing it. I'm also watching via DirecTV, with box feeding an AV receiving via optical cable into a 5.1 Mirage system. No buzzing at all. Are you only hearing it on that channel and during the broadcasts only?