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Did You Know?
MIRACLE OF SOUND

Be sure to read the inspiring story of our patient Terri and how she recovered her hearing.

Miracle of Sound

Turn to page 7 of the Fall 2013 Edition of Maple Grove Hospital Magazine.

 

 

 

 

Patient Resources

FACTS: THE POWER OF SOUND

Sound is measured in decibels (dB). Each decibel is one tenth of a bel, which is a unit that measures the intensity of sound.  For every six decibels, the intensity of the sound doubles.   At 90 dB of uninterrupted sound, the limit of safe noise exposure is eight hours.  For each six dB increase of uninterrupted sound thereafter, the limit of safe exposure is reduced by half.

It is important to know the approximate intensity of sound around you to protect your hearing. Click here to use the Interactive Loudness Scale.

Decibels

Activity

30

Whispering a secret to a best friend can register at 30 decibels.

50

A steady summer rain measures 50 decibels.

70

Rush hour traffic can reach 70 decibels in intensity.

85

Prolonged exposure to noises above 85 decibels can damage hearing. Protect your ears by wearing ear plugs.

90

Subway trains emit noise in the range of 90 decibels.

110

Power saws and many other power tools operate at a noise level of 110 decibels.

130

Wear your ear plugs at the track! Race car noise can exceed 130 decibels.

150

Celebratory fireworks can reach decibel levels up to 150.

170

At 170 decibels, a shot gun blast can damage unprotected ears.

Source: The American Academy of Otolaryngology-Head and Neck Surgery

 
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