Difference between revisions of "Decibel"
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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. | 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. | ||
| + | [[category:measurements]][[category:physics]] | ||
Revision as of 01:24, July 17, 2007
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.