Nails on a chalkboard. A fly buzzing around the room. A child having a tantrum in the next apartment. The drip-drip-drip of a leaking faucet. An overheard cell-phone conversation in a public place. Most people would agree that these things are amazingly annoying, but what is it about them, exactly, that irritates us so much?

黑板上有钉子。一只苍蝇在房间里嗡嗡地叫。隔壁房子一个小孩在发脾气。水龙头漏水的滴答滴答声。公共场所电话聊天的串音。大部分人觉得这些事情非常令人讨厌，但是它们究竟是怎么了，真的让我们那么生气吗？

According to "Annoying: The Science of What Bugs Us," some sounds, like the screech-squeak of nails on a chalkboard or the high-pitched drone of a mosquito near one's ear, are irritating because we react to them in a physical way. "It seems to be something intrinsic about that mix of frequencies," said Flora Lichtman, co-author of "Annoying: The Science of What Bugs Us," in a recent interview with NPR. "The change in volume rapidly—it's called 'rough' in acoustics—most people's ears don't like that stimulus."

根据《恼人：惹怒我们的科学》，一些声音，如黑板上钉子的吱吱尖叫声或一只蚊子在耳朵边的嗡嗡尖叫声，都非常恼人，因为我们身体对这些的反应。“这似乎是一些关于频率混合的内在东西。”《恼人：惹怒我们的科学》合著者Flora Lichtman在最近一个NPR的访问中说。“音量迅速改变——声学中称为‘粗’——大部分人不喜欢那种刺激。”

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