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- $Unique_ID{BRK00748}
- $Pretitle{}
- $Title{Is it True That Loud Noises Can Damage Hearing?}
- $Subject{ears loud noise hearing community social Sense senses ear hear
- decibels dB}
- $Volume{Q-21}
- $Log{}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
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-
- Is it True That Loud Noises Can Damage Hearing?
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- QUESTION: Is it true that loud noises can damage my hearing? Can you tell me
- what type of sound can do this, and how loud it must be before I am in any
- danger? This is not one of my senses that I wish to lose if I can something
- to prevent it.
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-
- ANSWER: There is no question that continual and repeated exposure to loud
- sounds can seriously and permanently damage your hearing. About 1 out of
- every 10 Americans has some hearing loss that can affect their ability to
- understand the spoken word, and in many cases the cause has been excessive
- exposure to loud sounds and noise. It isn't the type of sound that is
- important; loud music and noise in the work place are equally damaging, but it
- is the intensity or force of the sound that makes the difference. The
- intensity of sound is measured in decibels (dB), and to give you some idea of
- the decibel ratings of some common circumstances, take a look at these
- figures. A whispered word may equal as much as 30 dB, while normal
- conversation will generate 60 dB. Truck traffic and shop tools produce about
- 90 dB, but a loud rock concert and auto horn or sandblasting operation create
- levels as highs as 115 dB. When you get up to 140 dB, the amount of sound
- produced by a gun blast or a jet engine, the sound is both painful and even a
- brief exposure may injure your hearing, even if but for a short time. The
- amount time that you are exposed to the sound is important too; obviously the
- longer the exposure period, the greater the possibility of harm. Continuous
- noise over the level of 85 dB will cause a gradual loss of hearing in most
- individuals and the government now requires hearing protectors for workers who
- must remain in an area where the sound averages more than 90dB during an 8
- hour day. Hearing protectors come in two main forms, ear plugs and earmuffs.
- When properly fitted they can reduce the sound levels from 15 to 30 dB. Using
- both together would add another 10 to 15dB of protection. It is important to
- realize that once your hearing has been damaged by excessive noise, there is
- no medical treatment that can restore it, so prevention now is your best bet
- to conserve the hearing levels you now enjoy.
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-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
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