Difference between revisions of "Decibel"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
| − | |||
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. | 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. | ||
[[category:Units of Measurement]][[category:physics]] | [[category:Units of Measurement]][[category:physics]] | ||
Revision as of 03:42, November 6, 2008
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 logarithmically and cannot be added arithmetically. An increase of ten dB is perceived by human ears as a doubling of noise.