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%IMPZLENGTH Length of the impulse response for a discrete-time filter. % IMPZLENGTH(Hd) returns the length of the impulse response of % the filter defined by Hd. % % IMPZLENGTH(Hd,TOL) will specify the tolerance for greater or % less accuracy. By default, TOL = 5e-5. % % See also DFILT/IMPZ, DFILT/STEPZ. % Author: P. Costa, J. Schickler % Copyright 1988-2002 The MathWorks, Inc. % Help for the p-coded IMPZLENGTH method of DFILT classes.