effects of noise.pdf

8/14/2019 effects of noise.pdf

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HOWNOISE EXPOSUREAFFECTS

YOU


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SOUND ENERGY

TRAVELS IN A WAVE

FORM


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Three Sections of Your Ear

Courtesy of 3M Corporation: PENDING

Outer Ear

Middle

Ear

Inner Ear


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The fluid in your innerThe fluid in your innerear moves hair cellsear moves hair cellswhich send signals towhich send signals to

your your brainbrain


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Normal Hair CellsNormal Hair Cells

Courtesy of National Hearing ConservationAssociation: PENDING


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When your hair cellsare damaged

these signals becomeweak or stopcompletely


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Damaged / Missing Hair Cells

Courtesy of National Hearing

Conservation Association: PENDING

The ability toThe ability to

hear ishear is

gone fromgone from

this areathis area


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Typical Noise LevelSources (dB)

20Broadcast studio40Quiet office

60Air conditioning unit

90Bulldozer

100Surface drill

120Jet takeoff (at 200 ft)

180Rocket launch


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DoDo You You Know ThatKnow That

A gun blast or rocket launch can causeA gun blast or rocket launch can cause

Permanent hearing lossPermanent hearing loss

Very loud music can causeVery loud music can cause Temporary hearing lossTemporary hearing loss

Occupational noise exposure can causeOccupational noise exposure can cause Hearing loss at a younger ageHearing loss at a younger age


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Noise exposureNoise exposuremay also causemay also cause

Stress

High blood pressureDistraction

Sleep lossLost productivity


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Loss of Ability to CommunicateLoss of Ability to Communicate

Courtes of AERO Cor : PENDING


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Results of Hearing LossDegrades and even destroys the quality ofDegrades and even destroys the quality of

YOUR YOUR life bylife by Interfering withInterfering with YOURYOUR ability to hear sounds ofability to hear sounds ofnature and musicnature and music

LimitingLimiting YOURYOUR ability to communicate withability to communicate withfamily, friends and cofamily, friends and co --workersworkers

Leading toLeading to YOURYOUR withdrawal from socialwithdrawal from socialsituationssituations

CausingCausing YOUYOU to place the blame on othersto place the blame on others LoweringLowering YOURYOUR self self --esteem leadingesteem leading toisolation and depression


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NOISE EXPOSURENOISE EXPOSUREIS DETERMINED BYIS DETERMINED BY

HOWHOW

LOUD THE SOUND ISLOUD THE SOUND IS AND AND

HOW LONGHOW LONG YOUYOU ARE EXPOSED TO IT ARE EXPOSED TO IT


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MSHAs Table of PermissibleMSHAs Table of PermissibleNoise ExposuresNoise Exposures

Number of Number of HoursHours Average SoundAverage Sound LevelLevel

Per Day (dBA)Per Day (dBA)

884422

11

90909595

100100

105105110110115115


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49% of Metal/49% of Metal/ NonMetalNonMetalMiners Have HearingMiners Have Hearing

Impairment* by Age 50Impairment* by Age 50

Compared with 9% of theCompared with 9% of theGeneral PopulationGeneral Population*An average 25 dB hearing loss at 1, 2, 3, and 4 kHz

Source: Prevalence of Hearing Loss for NoiseExposed Metal/Nonmetal Miners (NIOSH, 1997)


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90% 0f Coal Miners Have90% 0f Coal Miners HaveHearing Impairment* byHearing Impairment* byAge 51 Compared withAge 51 Compared with

10% of the General10% of the GeneralPopulationPopulation* An average 25 dB hearing loss at 1,2,3 and 4 kHz

Source: Analysis of Audiograms for a Large Cohort

of Noise-Exposed Miners (NIOSH, 1996)


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IT ALL COMES DOWN TO THISIT ALL COMES DOWN TO THIS

Courtesy of Starkey Laboratories: PENDING

Protect YourHearing Now

OR Wear thisLater


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Your Children can whisper to you now.

Dont make them shout at you in the future

Documents

effects of noise.pdf