Why do I have to know more about the issue of maintaining the hearing??
First, because the blessing of hearing and the ability for it is priceless.
And secondly because appoint hearing rights to enjoy life's pleasures such as music, the voice of loved ones ...
Third, because the hearing is the easiest way to communicate with others.
Finally, the hearing is good and Celtic to stay safe in your work and in your home.
Definition of noise ..!
Is the level of sound is not desirable because it leaves a negative impact
On the ability of hearing in humans ..
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How noise can affect your health ..?
The negative effects of noise on man ..!
Signs of the increasing loss of hearing ..!
Examples of the growing signs of hearing loss ..!
Methods to control the noise ..!
Table levels of sound intensity and exposure time allowed in which each level ..!
Examples of levels of intensity of sound ..!
Personal gear to protect the ear ...!
Means to preserve hearing ..!
