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Bookmark or Share- What Are Decibels, and How Are They Measured? | HowStuffWorksDecibels (abbreviated dB) are the units used to measure the relative intensity of a sound. The decibel unit of measurement is a little odd because the human ear is incredibly sensitive. The human ear can hear everything from your fingertip brushing lightly over your skin to a loud jet engine.
- What is a decibel (dB)? - RapidTables.comDecibel (dB) definition. Decibel (Symbol: dB) is a logarithmic unit that indicates ratio or gain. Decibel is used to indicate the level of acoustic waves and electronic signals. The logarithmic scale can describe very big or very small numbers with shorter notation.
- Decibel Scale (video) | Sound | Khan AcademyDiscover the magic of the Decibel Scale, the key to measuring sound intensity. Unpack the equation Beta = 10 log (I/10^-12), and marvel at the sensitivity of human hearing. Explore how logarithms transform large scales into manageable numbers, making the Decibel Scale a powerful tool in physics. Created by David SantoPietro. Questions.
- Decibel (dB) | Definition, Formula, & Facts | Britannicadecibel (dB), unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio.
- Decibel - WikipediaThe decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel ( B ). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12 ). [1] [2]
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