dB Gain -- was RE: FLx GN Adding Db gain
Posted by
Jim Brown-10 on
Nov 11, 2008; 8:53pm
URL: http://elecraft.85.s1.nabble.com/FLx-GN-Adding-Db-gain-tp1330201p1486858.html
At the risk of being pedantic, the correct unit is the deciBel, one
tenth of a Bel, and the correct abbreviation is dB (not Db). The
Bel is a unit of change in loudness and is named after Alexander
Graham Bell. Because the way humans hear is logarithmic (as is our
perception of light), the Bel (and the deciBel) are the log of the
ratio of sound levels, and are translated into the log of power
levels and voltage levels corresponding to that loudness change.
73,
Jim K9YC
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