![]() In electronics, decibels are employed to express ratios of power or amplitude.The decibel (dB) scale is logarithmic and can represent a wide range of values using a more manageable scale.The decibel (dB) allows us to compare the relative difference in intensity between two values.It establishes a reference point by setting the threshold of human perception as the standard pressure in the air.The decibel (dB) is utilised as a measurement unit for sound pressure levels.Here are few reasons we use Decibel (dB): It is comparable to the soft sound of whispering.īelow is a chart illustrating examples of sounds across a range of 0 to 120 decibels.When the sound becomes 1,000 times more powerful than near total silence, it reaches 30 dB.If we increase the sound intensity by 100 times compared to near total silence, it reaches 20 dB.It is equivalent to the sound of our breathing.A sound that is 10 times more powerful than the threshold of human hearing corresponds to 10 dB.At the lowest end of the decibel scale, 0 dB represents the threshold of human hearing, where the sound is just barely audible. ![]() This is called the decibel scale or dB scale. There are different sound levels around us, the human ear has an ability to handle them, therefore, a logarithmic scale is used to express the sound levels meaningfully in more flexible numbers rather than a linear one.
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