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- Decibel - Wikipedia
In electronics, the gains of amplifiers, attenuation of signals, and signal-to-noise ratios are often expressed in decibels The decibel originates from methods used to quantify signal loss in telegraph and telephone circuits
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- What is a decibel (dB)? - RapidTables. com
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 (dB) | Definition, Formula, Facts | Britannica
Decibel (dB), unit for expressing the ratio between two amounts of electric or acoustic power or for measuring the relative loudness of sounds
- Levels Of Noise In Decibels (dB) Level Comparison Chart
To express levels of sound meaningfully in numbers that are more manageable, a logarithmic scale is used, rather than a linear one This scale is the decibel scale A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 decibels
- Decibel A, B and C - The Engineering ToolBox
The decibel A filter is widely used dB(A) roughly corresponds to the inverse of the 40 dB (at 1 kHz) equal-loudness curve for the human ear With the dB(A) filter the sound level meter is less sensitive to very high and very low frequencies
- What Are Decibels, and How Are They Measured? | HowStuffWorks
Decibels (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
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