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Decibel - Wikipedia The 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]
What is Decibel? - BYJUS The decibel (dB) is a unit that expresses the ratio of two values of a physical quantity, often power or intensity One decibel is one-tenth of one bel, a unit named in honour of Alexander Graham Bell
Decibel (dB) | Definition, Formula, Facts | Britannica decibel (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
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
DECIBEL | English meaning - Cambridge Dictionary One can define levels of intensities: after the inventor of the telephone we call them decibels (or perhaps phones!) Nearly 75 years old, and suffering from hearing loss (our interview was conducted at a high decibel), he had dedicated much of his life to promoting literacy in his language
DECIBEL Definition Meaning - Merriam-Webster The unit for measuring the relative intensities of sound is called a decibel Because the decibel scale is logarithmic, a sound with an intensity that is twice that of a reference sound corresponds to an increase of little more than 3 decibels
How To Understand The Unit Of Decibels (Simple explanation) A decibel (dB) is a unit used to measure the intensity or power level of sound or signal It represents the logarithmic ratio between the measured value and a reference value, typically the threshold of human hearing
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 definition and meaning | Collins English Dictionary 1 Acoustics a numerical expression of the relative loudness of a sound: the difference in decibels between two sounds is ten times the common logarithm of the ratio of their power levels 2 Electronics and Radio
DECIBEL Definition Meaning | Dictionary. com Decibel definition: a unit used to express the intensity of a sound wave, equal to 20 times the common logarithm of the ratio of the pressure produced by the sound wave to a reference pressure, usually 0 0002 microbar See examples of DECIBEL used in a sentence