# Keyword Analysis & Research: db

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What is decibel (dB)?

Decibel (Symbol: dB) is a logarithmic unit that indicates ratio or gain. 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.

What is the DB level in dB?

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. The ratio in bels is the base 10 logarithm of the ratio of P 1 and P 0:

What is the ratratio of DB?

Ratio dB = 10⋅log 10 (P 1 / P 0) Amplitude ratio. The ratio of quantities like voltage, current and sound pressure level are calculated as ratio of squares. The amplitude ratio in decibels (dB) is 20 times base 10 logarithm of the ratio of V 1 and V 0: Ratio dB = 10⋅log 10 (V 1 2 / V 0 2) = 20⋅log 10 (V 1 / V 0)

What is DB black?

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