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Earn +20 ptsQ: Is Decibel is the unit of power ratio?
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What is the decibel a unit of?
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.
What does the unit decibel measure?
The ratio between two quantities, usually quantities that somehow measure power, or intensity (power / area).
Synonyms for the word decibel?
A tenth of a bel. It's a ratio of two values of the same unit.
Is Decibel a vector?
No. It's the log of the ratio of two power levels. It a magnitude without a direction.
What is one tenth of a bel?
A unit of power or intensity equal to one tenth of a bel is a decibel.
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