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Ear and broken notes
Got a tin ear?
Test your sense of pitch on the Distorted Tunes Test
Protecting kids' hearing: Why it matters
Many sources of noise can damage kids' hearing. The good news? Noise-induced hearing loss is 100 percent preventable.

Read more about NIDCD's Noisy Planet campaign »

National Institute on Deafness and Other Communication Disorders. Celebrating 20 years of research: 1988 to 2008