Decibel
This is an old revision of this page, as edited by Jazzman831 (talk | contribs) at 04:37, July 13, 2007. It may differ significantly from current revision.
The decibel is the unit of sound pressure used to measure noise. Decibel means 1/10 of a Bell, after Alexander Graham Bell Because decibels are such a small measure, they are computed logarithmically and cannot be added arithmetically. An increase of ten dB is perceived by human ears as a doubling of noise.