By Onanuga Yoyinsayo
Hearing is a delicate thing, and your ears can be damaged even after short durations of loud sound. Hearing damage starts at sounds that are 90 decibels after prolonged exposure of up to eight hours per day.
Your ear contains a thin membrane that vibrates when sound waves hit it. The louder the sound, the more the membrane vibrates. Just like a drum skin, the ear drum can burst if vibrated too much.
The bones in the inner ear are filled with fluid and lined with tiny hairs. The vibration of sound waves moves this liquid and applies pressure to the hairs which your brain interprets as sound. If these hairs are damaged due to excessive noise it can reduce hearing significantly.
Sound levels above 85 decibels are dangerous to your hearing and can cause irreversible damage. Amplified music at about 110 decibels can damage your ear after four to 30 minutes of exposure.
Repeated exposure to loud music will damage the tiny hairs inside the cochlea of your ear, which turn sound into nerve impulses that are then processed by your brain. This damage is reversible unless it is due to repetitive and prolonged exposure to loud music.
The ear drum vibrates and the sound is picked up and interpreted by the brain. Sudden loud noise, such as an explosion, could cause damage to the drum, as loud music too over a long time and lead to temporary or permanent deafness.
Ear bud-style headphones are dangerous because they don’t block outside noise as well as headphones that fit over the ear. This results in you listening at volume level that can damage your hearing in as little as an hour and a half.
Symptoms leading up to and including possible damage include tinnitus (ringing in the ears), hearing sound as if it’s being muffled, and a difficult time hearing and understanding speech in loud environments.
Prevent hearing noise by using ear protection such as ear plugs when attending loud musical events. Keep your headphones at a level where you can still hear normal conversation above your music.
(News Source : vanguardngr.com)