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decibels (db)

A unit used to express differences in electrical or acoustical signals including, for example, how noisy a motion picture camera or airplane is, or how much Gain a dark location requires. Formula: Equal to 10 times the logarithm of the two levels. Also see: Gain; and White Balance.

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decibels (db)

Logarithmic scale used to describe phenomena taking a large range of values. Decibels are not a unit and always describe the ratio to a reference value like Signal to Noise Ratio.
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