Owner`s manual

ENGLISH

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 125 dB

Chart information obtained from

http://www.nidcd.nih.gov/health/education/teachers/pages/common_sounds.aspx