Practical Applications
In practical systems, it is not possible to produce a perfect impulse to serve as input for testing; therefore, a brief pulse is sometimes used as an approximation of an impulse. Provided that the pulse is short enough compared to the impulse response, the result will be close to the true, theoretical, impulse response. In many systems, however, driving with a very short strong pulse may drive the system into a nonlinear regime, so instead the system is driven with a pseudo-random sequence, and the impulse response is computed from the input and output signals.
Read more about this topic: Impulse Response
Famous quotes containing the word practical:
“One of the great triumphs of the nineteenth century was to limit the connotation of the word “immoral” in such a way that, for practical purposes, only those were immoral who drank too much or made too copious love. Those who indulged in any or all of the other deadly sins could look down in righteous indignation on the lascivious and the gluttonous.... In the name of all lechers and boozers I most solemnly protest against the invidious distinction made to our prejudice.”
—Aldous Huxley (1894–1963)