www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@scalar/iirxform.m
function [Ht, anum, aden] = iirxform(Ho, fun, varargin) %IIRXFORM IIR Transformations % Author(s): J. Schickler % Copyright 1988-2002 The MathWorks, Inc. % This should be private [b, a] = tf(Ho); [num, den, anum, aden] = feval(fun, b, a, varargin{:}); % Create the transformed and allpass filters Ht = copy(Ho); % [EOF]