bel (bel) a unit used to express the ratio of two powers, usually electric or acoustic powers; an increase of 1 bel in intensity approximately doubles loudness of most sounds. Symbol B. See also decibel.
bel
bel (b l)n. A unit expressing the relative intensity of a sound, equal to ten decibels. |
bel
Etymology: Alexander G. Bell, Canadian inventor, 1847-1922
a unit that expresses intensity of sound. It is the logarithm (to the base 10) of the ratio of the power of any specific sound to the power of a reference sound. The most common reference sound has a power of 10-16 watts per square centimeter, or the approximate minimum intensity of sound at 1000 cycles per second that is perceptible to the human ear. An increase of 1 bel approximately doubles the intensity or loudness of most sounds. See also decibel.
bel
a unit used to express the ratio of two powers, usually electric or acoustic powers; an increase of 1 bel in intensity approximately doubles loudness of most sounds (see also decibel).
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