Choose the right earplugs or earmuffs: Buy earplugs or earmuffs with a Noise Reduction Rating of at least 22 decibels. This number, listed on the product package, tells you how much sound the product ...

The content discusses the fundamentals of acoustics, focusing on sound refraction, the anatomy of the ear, and how sound waves are perceived. It explains how sound travels through the ear, the ...

Millions of years ago marine animals had hearing organs that allowed them to detect sounds in the water. When land dwelling animals evolved they now had to detect environmental sounds that traveled ...

Sound waves decrease in amplitude as they pass through the fluid-filled cochlea of the inner ear. The inner ear’s outer hair cells (OHCs) are specially equipped to mitigate this loss in amplitude so ...