It doesn’t matter what the source of the loud sounds is – music, machinery, conversation or other noisy environments.

Extremely loud noises can cause permanent damage to the tiny hair cells inside the cochlea. Even moderately loud noise over a period of time can be damaging. But just how loud is loud? Studies show that prolonged exposure to sounds at or above 90dB can damage hearing. The chart graphically illustrates some common noises and their respective dB levels.