ALL meanings of decibels
dec·i·bel
D d - noun decibels a unit used to express the intensity of a sound wave, equal to 20 times the common logarithm of the ratio of the pressure produced by the sound wave to a reference pressure, usually 0.0002 microbar. 1
- noun decibels a unit of power ratio, the number of units being equal to a constant times the logarithm to the base 10 of the intensities of two sources. 1
- noun decibels a unit used to compare two voltages or currents, equal to 20 times the common logarithm of the ratio of the voltages or currents measured across equal resistances. Abbreviation: dB, db. 1
- noun decibels Plural form of decibel. 1
- noun decibels plural of decibel. 0