Important Performance and Safety
Tips for your Headphones
Listen Responsibly
To avoid hearing damage, make sure that the volume on your music
player is turned down before connecting your headphones. After
placing headphones in your ears, gradually turn up the volume
until you reach a comfortable listening level.
Noise levels are measured in decibels (dB), exposure to any noise
at or above 85 dB can cause gradual hearing loss.
Monitor your use; hearing loss is a function of loudness versus time.
The louder it is, the less time you can be exposed to it. The softer
it is, the more time you can listen to it. Refer to the chart* on the
following page.
This decibel (dB) table compares some common sounds and shows
how they rank in potential harm to hearing.
SOUND
NOISE LEVEL
(dB)
EFFECT
Whisper
30
Very quiet
Quiet Office
50-60
Comfortable hearing
levels are under 60 dB
Vacuum Cleaner, Hair
Dryer
70
Intrusive; interferes
with telephone
conversations
Food Blender
85-90
85 dB is the level at
which hearing damage
(8 hrs.) begins
Garbage Truck,
Cement Mixer
100
No more than
15 minutes of
unprotected exposure
recommended for
sounds between
90-100 dB
Power Saw, Drill/
Jackhammer
110
Regular exposure to
sound over 100 dB of
more than 1 minute risks
permanent hearing loss
Rock Concerts (varies)
110-140
Threshold of pain begins
around 125dB
*Chart information obtained from http://www.nidcd.nih.gov/health/education/teachers/common_sounds.asp
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Содержание by dr.dre
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