The louder a sound is, the more it moves the structures in your ear. The higher its pitch, the faster it moves them. Loud or high-pitched noises can cross the threshold of pain — the point at which a sound is painful. Here's how some everyday sounds compare to LRAD devices: Normal...
If you know you're going to be around loud sounds for more than a few minutes, think about wearing protection, such as: Earplugs.Usually made of foam or rubber, they go in yourear canaland can reduce noise by 15 to 30 decibels. You can buy them off-the-shelf or have them custom-...
Bats make echolocating sounds in their larynxes and emit them through their mouths. Fortunately, most are too high-pitched for humans to hear – some bats can scream at up to 140 decibels, as loud as a jet engine 30m away. Greater horseshoe bat using echolocation to chase a moth. © ...