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Health and Safety Information 121
Responsible Listening
Caution!:
Avoid potential hearing loss.
Damage to hearing occurs when a person is exposed to loud sounds
over time. The risk of hearing loss increases as sound is played
louder and for longer durations.
Prolonged exposure to loud sounds (including music) is the most
common cause of preventable hearing 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 headphones (including 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 potential
hearing problem varies. Additionally, the amount of sound produced
by a portable audio device varies depending on the nature of the
sound, the device settings, and the headphones that are used. As a
result, there is no single volume setting that is appropriate for
everyone or for every combination of sound, settings and equipment.
You should follow some commonsense recommendations when using
any portable audio device:
r631.book Page 121 Tuesday, June 1, 2010 2:57 PM