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CONTROL LOUDNESS IN YOUR LIFE
Loudness is measured in decibels. Experts recommend that we use earplugs when exposed to 85dB and above.

COMMON SOUNDS AND THEIR APPROXIMATE SOUND LEVELS
20 dB Ticking watch
30 dB Quiet whisper
40 dB Refrigerator hum
50 dB Rainfall
60 dB Sewing machine
70 dB Washing machine
80 dB Alarm clock 2 feet away
85 dB Average traffic
95 dB MRI
100 dB Blow Dryer; Subway train
105 dB Power mower, chain saw
110 dB Screaming child
120 dB Rock Concert, thunderclap
130 dB Jackhammer, Jet plane (100 feet away)

A standard iPod goes up to 120 decibels; the European version is limited, by law, to 100.
Use earbuds that limit the volume to 80 decibels, or 85 if bass or treble boost is turned on. At least use bigger headphones that cover the ear

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