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