Beats by Dr Dre urbeats User Guide - Page 5

This decibel dB table compares some common sounds and shows how they, rank in potential harm

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English This decibel (dB) table compares some common sounds and shows how they rank in potential harm to hearing. SOUND Whisper Quiet Offce Vacuum Cleaner, Hair Dryer Food Blender Garbage Truck, Cement Mixer Power Saw, Drill/Jackhammer Rock Concert (varies) NOISE LEVEL (dB) 30 EFFECT Very quiet 50-60 Comfortable hearing levels are under 60dB 70 Intrusive; interferes with telephone conversations 85-90 85 dB is the level at which hearing damage (8 hrs.) begins 100 No more than 15 minutes of unprotected exposure recommended for sounds between 90-100 dB 110 Regular exposure to sound over 100 dB of more than 1 minute risks permanent hearing loss 110 -140 Threshold of pain begins around 125 dB *Chart information from http://www.nidcd.nih.gov/health/education/teachers/pages/common_sounds.aspx 3

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3
SOUND
NOISE LEVEL
(dB)
EFFECT
Whisper
30
Very quiet
Quiet OfFce
50-60
Comfortable hearing levels
are under 60dB
Vacuum Cleaner,
Hair Dryer
70
Intrusive; interferes with
telephone conversations
±ood 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 Concert (varies)
110-140
Threshold of pain begins
around 125 dB
English
This decibel (dB) table compares some common sounds and shows how they
rank in potential harm to hearing.