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| de·ci·bel [ déssəb'l, déssə bèl ] (plural de·ci·bels) |
noun |
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unit of relative loudness: a unit of relative loudness, electric voltage, or current equal to ten times the common logarithm of the ratio of two readings. For sound, the decibel scale runs from zero for the least perceptible sound to 130 for sound that causes pain.
Symbol dB
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