Editing Step response (section)

== Time domain versus frequency domain ==
Instead of frequency response, system performance may be specified in terms of parameters describing time-dependence of response. The step response can be described by the following quantities related to its ''time behavior'',

*[[overshoot (signal)|overshoot]]
*[[rise time]]
*[[settling time]]
*[[ringing (signal)|ringing]]

In the case of [[linear]] dynamic systems, much can be inferred about the system from these characteristics. [[Step response#Results|Below]] the step response of a simple two-pole amplifier is presented, and some of these terms are illustrated.

In LTI systems, the function that has the steepest slew rate that doesn't create overshoot or ringing is the Gaussian function. This is because it is the only function whose Fourier transform has the same shape.