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The '''decibel''' is the unit of sound [[pressure]] used to measure [[noise]]. Decibel means 1/10 of a Bel, after [[Alexander Graham Bell]]. Because decibels are such a small measure, they are computed [[logarithm]]ically and cannot be added arithmetically. An increase of ten dB is perceived by human [[ear]]s as a doubling of noise. There is no absolute decibel scale, so the decibel is used to measure sound in comparison to another sound.

The '''decibel''' is the unit of sound [[pressure]] used to measure [[noise]]. Decibel means 1/10 of a Bel, after [[Alexander Graham Bell]]. Because decibels are such a small measure, they are computed [[logarithm]]ically and cannot be added arithmetically. An increase of ten dB is perceived by human [[ear]]s as a doubling of noise. There is no absolute decibel scale, so the decibel is used to measure sound in comparison to another sound. When the decibel level gets too high, it may cause pain, and ceases to be [[awesome]].

[[category:Units of Measurement]][[category:physics]]

[[category:Units of Measurement]][[category:physics]]