I have experienced it for the past few weeks, as have many others on other forums. No one seems to be able to explain what the cause is. Can you?
What is it?
A series of electronic beeps or tones lasting for a couple of seconds in the background. Some have described it as an old cell phone ring, or a video game from the 70s.
When does it occur?
It's most noticeable on talk shows like Letterman, only when the audience applauds loudly, or during sporting events like football games and only when the crowd cheers loudly.
Where does it occur?
Digital channels on multiple cable providers, Fios, Comcast, etc, and OTA. On multiple networks, CBS, FOX.
Experts, what is it and why are the networks broadcasting this annoying sound?