A unit for measuring the relative loudness of sound on a scale beginning with 1 for the faintest audible sound.
Unit of measurement expressing the intensity or loudness of sound relative to that of a standard; intensity of sound in bels is the logarithm of the ratio of the intensity of that sound and a standard sound. A decibel (dB) is one-tenth of a bel.
The intensity of a sound or tone; measurement noted on audiograms and other assessments of hearing.
One tenth of a bel: a unit for comparing levels of power ratios (especially sound) on a logarithmic scale. A power source of intensity P has a power level of 10 log 10 P/Pο decibels, where P0 is the intensity of a reference source. The decibel is much more widely used than the bel. Silence is db; a whisper has an intensity of 20 db, normal speech 50 db, heavy traffic 80 db, and a jet aircraft 120 db. One decibel is the smallest change in sound volume the normal human ear can detect.
The unit of hearing. One decibel is the least intensity of sound at which a given note can be heard. The usual abbreviation for decibel is dB.
A unit for expressing logarithmically the pressure or power (and thus degree of intensity or loudness) of sound. The dB is a tenth of a bel.
The unit used to measure the loudness or intensity of sound.
A method for quantifying the proportion between two magnitudes. In the context of voltage, such as in a television signal, it is equivalent to 20 multiplied by the logarithm (base 10) of the ratio between the two magnitudes.
A metric utilized to quantify the intensity of sound, expressed in decibels (dB). Ordinary speech commonly falls within the range of approximately 20 to 50 decibels.
A decibel is one-tenth of a bel, a unit used to measure sound intensity. It represents the smallest level of loudness at which a specific sound can be heard.