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Decibel (dB)
—
►(^Decibel is a unit used to show that a signal is atter/uated or am-pfffied. , ' __
dB= 1 0* log(P2/P1)
dB: Decibel P2 & PI: Power of a signal at point 1 and point 2
When decibel value is negative, the signal is attenuated..
When decibel value is positive, the signal is amplified. is used as a power unit in miljjWatts.
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