NOISE INDUCED HEARING LOSS(NIHL),DIWALI,CRACKERS

Near diwali we should avoid fire crackers,to prevent the NIHL.There is a formula to calculate the time of exposure to noise.
At-85 dbs—-8hrs.
90dbs-4hrs.
95dbs–2hrs.
100dbs–1hr.
105dbs–1/2 hr.
110dbs–15 minutes.
115dbs–71/2 minutes.
120dbs–3minutes
125dbs–1/2 minute.
130dbs–00 ,perforation of ear drum & comlete hearing loss
crackers noise ranges from 1oo–120 dbs(exposure time is 3minutes to 1 hr.more than yhis is always hazardus to HEARING system.
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