What are Decibels?

What are Decibels?

• The volume (or loudness) of a sound is measured in decibels (or dB). 
• Think of it as the pressure (or energy) behind the volume. 
• The general range of human hearing is from ~0dB to 120dB. A quiet library is about 30dB, while 120dB is considered the threshold of pain, where the ears begin to feel pain from the volume.

OSHA exposure limits: https://www.osha.gov/dsg/annotated-pels/index.html

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