Why Fingernails Down A Blackboard And Other Sounds Are So Awful

Revealed: Why Fingernails Down A Blackboard Sound So Awful

Listening to the noise of fingernails down a blackboard is near-intolerable for many people.

Now researchers have analysed why it is we find the sound so awful.

The researchers, from Cologne and Vienna, found that our ears may actually amplify the screeching sound.

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