Q: Who Decibel is a unit of?

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Decibel is no real unit, it is a pseudo unit. The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity. A change in voltage ratio by a factor of two is approximately a 6 dB change. A change in power ratio by a factor of two is approximately a 3dB change.

A tenth of a bel. It's a ratio of two values of the same unit.

A unit of power or intensity equal to one tenth of a bel is a decibel.

It can be the power ratio. If you measure voltage or sound pressure it is not the power ratio.

The ratio between two quantities, usually quantities that somehow measure power, or intensity (power / area).

Related questions

A decibel is the unit of measuring the level of sound.

The logarithmic unit of measurement "decibel"" is abbreviated as "dB"

The bell is a large unit, so a subunit, a decibel, is usually used. There is no subunit of decibel.

The most common unit of sound loudness is the decibel (dB).

The unit for loudness is the decibel (dB). It is a logarithmic unit used to measure the intensity of sound.

No. A decibel is one tenth of a bel. The decibel is a logarithmic unit of measurement that expresses the magnitude of a physical quantity relative to a specified reference level. It is a dimensionless unit, because it expresses a ratio of two quantities with the same unit.

Decibel

decibel

The decibel.

The decibel.

Sound intensity

the unit of measuring sound is decibel.