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Engineering, 04.04.2020 04:15 cookiebrain72
In many filtering applications, it is often undesirable for the step response of a filter to overshoot its final value. In processing pictures, for example, the overshoot in the step response of a linear filter may produce flare-that is, an increase in intensity-at sharp boundaries. It is possible, however, to eliminate overshoot by requiring that the impulse response of the filter be positive for all time. Show that if h(t), the impulse response of a continuous-time LTI filter, is always greater then or equal to zero, the step response of the filter is a monotonically nondecreasing function and therefore will not have overshoot.
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