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An optimal Filter used for the removal of noise from a signal which is corrupted by the measuring process itself.
See also Filter
References
Press, W. H.; Flannery, B. P.; Teukolsky, S. A.; and Vetterling, W. T. ``Optimal (Wiener) Filtering with the FFT.'' §13.3 in
Numerical Recipes in FORTRAN: The Art of Scientific Computing, 2nd ed. Cambridge, England:
Cambridge University Press, pp. 539-542, 1992.