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The ShrillsShrillness refers to the quality of sounds that are high-pitched, strident, or harsh, such as those from instruments like trumpets or piccolos. It also describes a phenomenon where certain sounds, like nails on a chalkboard or a crying baby, are perceived as psychologically painful beyond what can be explained by their frequency or loudness. Although research, including a 2011 study, has explored potential explanations, a comprehensive understanding of why these sounds are aversive remains elusive. (Source: Wikipedia)
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