How the Loudness Makes Hearing Damages
August 26, 2016 08:03 pm
Do you know heavy loudness makes hearing damages with you? The ear is the hearing organ of the Humans (mammals) body and providing balance is the central function of the ear. Ear contains 3 parts as the outer ear, middle ear and the inner ear. Outer ear is the only visible portion of the ear in most animals. Sound waves travel through the outer ear sound then modulated by the middle ear and transmitted to the vestibulocochlear nerve in the inner ear. Vestibulocochlear nerve passes information to the temporal lobe of the brain. That is the place where the waves are registered as sound.

Scientists measure sound in units known as decibels (Dess-in-buls). This decibel scale is not a linear measurement. Each one decibel rise equals a 10-fold increase in sound intensity. A young person with a normal hearing can be detected the zero decibels as the quietest level. Ears can hear throughout a range exceeding 140 decibels. But anything above from the 85 decibels makes risk to others. When people whispering or turning pages of a book even a library may run 35 decibels.

Sometimes outdoor traffic and bird singings can be raise to the 40 decibels and when comparing to kitchen mixers, blenders or dishwashers as well as vacuum cleaners noise level can reach 80 or 90 decibels. Televisions, Stereo equipment and headsets sound can be exceeded 100 decibels and also passing trains and thunder recorded as the 100 decibels. A music club or when a jet taking off from a distance of 610 meters it can be detected as 120 decibels.
There are two major features distinguish sound….

1) Pitch or Frequency
This can be shift between high and low levels
2) Energy

That is the most important feature and that is the decibel levels according to us the power of sound.

“Cochlea” is the sensory organ of ear. This cochlea is filled with a watery liquid and snail-shaped structure. It has microscopic hair can be damaged or killed all together by loud sounds. High pitched responded hair cells start to die at first. If these fragile hair cells die off surely people lose their ability of detect sounds, because if once these hair cells harmed they never grow back.

Ear tries to prevent entryway of too loudness to the ear. But always these natural efforts cant be succeed. Therefore these too loudnesss can cause a temporary deafness or inability to hear high pitched sounds. 

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