loss. Some scientific research suggests that using
portable audio devices, such as portable music players
and cellular telephones, at high volume settings for
long durations, may lead to permanent noise-induced
hearing loss. This includes the use of head phones (inclu-
ding headsets, earbuds, and Bluetooth® or other wireless
devices). Exposure to very loud sound has also been
associated in some studies with tinnitus (a ringing in the
ear), hypersensitivity to sound, and distorted hearing.
Individual susceptibility to noise-induced hearing loss
and other poten tial hearing problems varies.
The amount of sound produced by a portable audio
device varies depending on the nature of the sound, the
device, the device settings, and the headphones. You
should follow some commonsense recommendations
when using any portable audio device:
• Setthevolumeinaquietenvironmentandselectthe
lowest volume at which you can hear adequately.
• Whenusingheadphones,turnthevolumedownif
you cannot hear the people speaking near you or if
the person sitting next to you can hear what you are
listening to.
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