Understanding the Threat of Noise Noise is one of the greatest threats to your child’s hearing. But unlike many causes of hearing loss, preventing hearing damage from noise is largely within our control. Noise threatens our hearing because we hear sound when delicate hair cells in our inner ears vibrate. This creates nerve signals that the brain understands as sound. If we overload these delicate hair cells with exposure to loud noises, we damage them. This results in sensorineural hearing loss and often tinnitus—or “ringing in the ears.” The hair cells that vibrate most quickly—and that allow us to hear higher-frequency sounds like birds singing and children speaking—usually become damaged, dying first. Noise in our everyday lives may be damaging even to a child’s hearing,…