
A third advantage results from the introduction of logarithms, thus reducing the process of multiplying two transfer functions to addition.A second advantage is that this technique is feasible for lower frequencies, where measuring the phase difference between input and output signals is difficult.One apparent advantage of the bode diagram is the relative ease with which it is obtained.At times, the magnitude of a transfer function is referred to as gain and the corresponding plot as a gain plot. The magnitude of the transfer function is expressed in decibels (dB), the phase in degrees and the common parameter of frequency is plotted on a logarithmic scale in radians.
