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Protecting Your Hearing. Raising Awareness About Excessive Noise. What is sound?. Vibrations or waves that move through the air or water. Caused by molecules bumping into each other. The faster a wave vibrates, the higher the sound; slower waves produce low sound

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protecting your hearing

Protecting Your Hearing

Raising Awareness About Excessive Noise

what is sound
What issound?
  • Vibrations or waves that move through the air or water. Caused by molecules bumping

into each other.

  • The faster a wave vibrates, the higher the sound; slower waves produce low sound
  • Our voice produces sound because of vocal cords in our throat that vibrate when air is forced through them.
the human ear
The HumanEar

The ear is divided

into 3 parts:

-The outer ear or pinna,

funnels sound waves into the ear canal, which will lead to the eardrum. This is a membrane that stretches across the entrance to the middle ear.

the human ear4
-The middle ear has three tiny bones, the hammer, the anvil, and the stirrup. This is where waves become amplified.The Human Ear
the human ear5
Inside the inner ear is a coiled tube called the cochlea. It is filled with fluid, special “hair cells,” and nerve endings. It signals the brain, which lets you know what sound you heard. You will also find the semicircular canals which help control balanceThe Human Ear
sensory hearing loss
Sensory Hearing Loss

Caused by damage to the tiny hair cells in the cochlea. It is permanent.

  • Most common causes:
    • Aging
    • Loud noises. This damage is


noise and its effect on hearing
Noise and Its Effect on Hearing
  • Sounds are measured in decibels (dB). Very high levels cause damage to your hearing
  • Hearing loss due to loud noises is common in

children, adolescents,

and adults

examples of sound levels in our environment
Examples of Sound Levels in Our Environment
  • Listening to music on earphones at volume level 5, the sound reaches a level of 100 dB, loud enough to cause permanent damage after just 15 minutes per day!
loud noises around san antonio
Loud Noises Around San Antonio
  • Above 85 decibels

Band practice, football games, video arcades

  • Above 100 decibels

Pep rallies, rock concerts

more examples of things that cause too much noise
Target shooting



Shop tools

Video Games and arcades

Movie theaters


Power boating

Hair dryers


Vacuum cleaners

Garbage disposals

Gas-powered lawn mowers and string trimmers

Leaf blowers

Musical concerts

Sports events

More Examples of Things That Cause Too Much Noise
the warning signs of noise induced hearing loss
The Warning Signs of Noise Induced Hearing Loss
  • Hearing loss and tinnitus may be experienced in one or both ears, and may happen all the time, or only occasionally throughout a lifetime.
who is affected by noise induced hearing loss
Who Is Affected by Noise-Induced Hearing Loss?
  • More than 28 million Americans have some degree of hearing loss…. including:
    • Children
    • Adolescents
    • Young adults
    • Older people
  • Over 5 million 6 – 19 year-olds have hearing loss directly related to noise exposure.
where to go for more information
Where to Go for More Information

Crank It Down!

National Hearing Conservation Association

Dangerous Decibels

Oregon Hearing Research Center