Which Sounds Are the Most Annoying to Humans? Share Illustration: Elena Scotti (Photos: Getty Images) To sign up for our daily newsletter covering the latest news, features and reviews, head HERE. For a running feed of all our stories, follow us on Twitter HERE. Or you can bookmark the Gizmodo Australia homepage to visit whenever you need a news fix. Earlier this month, a kind of chirping, rainforest-y sound sprung up in my apartment. It came from my roommate’s room. At first, I took it for a video game, but then realised the sound materialised even when my roommate was asleep. For days, I wondered about this. At any point I could’ve asked him what the deal was, but I kept on forgetting — the sound was just annoying enough to be notable but not annoying enough to do something about. When I did remember to ask him, during one of the sound’s occasional disappearances, he had no idea what I was talking about.