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Decibel (dB)

A unit of measure used to express relative difference in power or intensity of sound.

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decibel (dB)
Engineering; Electronic engineering

A practical unit of relative gain. In terms of power, the relative gain in decibels is equal to: Gain (dB) = 10 log 10 ( P out /P in ), where P out is the output power and P ...

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One tenth of the common logarithm of the ratio of relative powers, equal to 0. 1 B (bel. ) Note 1: The decibel is the conventional relative power ratio, rather than the bel, for ...

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The standard unit used to express the ratio of two power levels. It is used in communications to express either a gain or loss in power between the input and output devices.

decibel (dB)
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Unit of sound measurement on a logarithmic scale, with sound approximately doubling in loudness for every increase of 10 decibels.

decibel (dB)
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A unit of signal strength or loudness, such as the signal on a data communications channel.

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