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Frequently Asked Questions

What is the difference between Decibel and DB?

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. The dB level can be viewed as relative gain of one level vs. other level, or absolute logarithmic scale level for well known reference levels. Decibel is a dimensionless unit.

What is the power ratio to DB conversion?

Power ratio to dB conversion. The gain G dB is equal to 10 times base 10 logarithm of the ratio of the power P 2 and the reference power P 1. G dB = 10 log 10(P 2 / P 1) P 2 is the power level. P 1 is the referenced power level. G dB is the power ratio or gain in dB.

What is the difference between A1 and A2 and G DB?

A 2 is the amplitude level. A 1 is the referenced amplitude level. G dB is the amplitude ratio or gain in dB. A 2 is the amplitude level. A 1 is the referenced amplitude level. G dB is the amplitude ratio or gain in dB. Find the output voltage for a system with input voltage of 5V and voltage gain of 6dB.

What is the amplitude ratio in decibels (dB)?

The amplitude ratio in decibels (dB) is 20 times base 10 logarithm of the ratio of V 1 and V 0: RatiodB = 10⋅log 10 ( V12 / V02) = 20⋅log 10 ( V1 / V0)


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