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    %TF  Convert to transfer function.
%   [NUM,DEN] = TF(Hd) converts discrete-time filter Hd to numerator and
%   denominator vectors.

%   Author: V. Pellissier, J. Schickler
%   Copyright 1988-2002 The MathWorks, Inc.

% Help for the p-coded TF method of DFILT classes.