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Fav十万个为什么
为什么指甲刮黑板声让人难受？
简单的摘要：指甲刮黑板声让人难受的原因主要是声音的频率特性、声音的强度以及声音的关联性。
1、指甲刮黑板产生的声音频率通常在2000Hz到5000Hz之间，这个频率范围接近人类耳朵对声音最敏感的区域，容易引起不适。
2、这种声音的强度虽然不大，但由于其频率特性，容易引起耳膜和听骨的共振，产生不适感。
3、指甲刮黑板的声音常常与负面经历或不适感相关联，这种心理上的关联性也会加剧人们对这种声音的厌恶感。
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