Noise Level 3
Noise Level 3 : Roughly, the total amount of noise in a signal. It is usually measured by the ratio of the root-mean-square signal to the root-mean-square noise. It imposes a limit below which signals cannot normally be distinguished from noise. Nomogram (or alignment chart, also called: momograph, momographic chart): The graphical representation of an equation of three variables fiuyv,w) = 0, by means of three graphical scales (not necessarily straight), arranged in such a manner that any straight line, called an index line, cuts the scales in values of u, v, and w satisfying the equation. By introducing auxiliary variables and constructing auxiliary scales, equations containing more than three variables may also be represented by momograms
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