What sort of noise do you mean? Might sound obvious but could there be an ad on the same page that's got sound on it? Quite often football streams will have that, usually you can press pause/stop on the advert. Though that wouldn't explain it when you're on RAWK with nothing else open.
It's playing now whilst I type, it's a news bulletin then like a convo between people over the top of that. Proper mad. Some fella now talking about rotations?

?? Then a news bulletin and now people talking about being in an accident?

?
3 different background noises going on oh and now a song to go with the above.
I've only got RAWK open and before that i was watching Madrid on SkyGo
Any ideas how to stop it??