The measurement quoted in dB describes the ratio (10 log power difference, 20 log voltage difference, etc.) between the quantity of two levels, the level being measured and a reference.
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1 Percent to fraction conversion. 2  Decimal to fraction conversion. 3  Percent to decimal conversion. 4  Adding fractions calculator. 5  Subtracting fractions calculator. 6  Multiplying fractions calculator. 7  Dividing fractions calculator. 8  Fractions calculator.