I don't seem to have a problem with the noise. If your neighbors are within earshot they might complain.
Normally, they're REALLY, REALLY loud when there's something wrong. I'm so thankful that the other morning they sounded their alarm.
I had just let the chickens out and a fox was lurking after them. Guineas really have a good eye for any predators.
Sometimes in the evening, right before bedtime, they like to yell. But it's no big deal. If they keep it up after dark I know there's something wrong.
I find them comforting, knowing I have Watch Dogs. I'm sure there's a lot of other people that would disagree with me.
Hahahaha........ Maybe I've just become immune to it. :-/