www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@basefilter/impzlength.m
function len = impzlength(Hb, varargin) %IMPZLENGTH Length of the impulse response for a digital filter. % IMPZLENGTH(Hb) returns the length of the impulse response of % the filter defined by Hb. % % IMPZLENGTH(Hb,TOL) will specify the tolerance for greater or % less accuracy. By default, TOL = 5e-5. % % See also SIGNAL/IMPZ. % Author: P. Costa, J. Schickler % Copyright 1988-2003 The MathWorks, Inc. narginchk(1,2); % Use strings because construct of fcn handles to functions not on the path % (methods) is very slow len = base_num(Hb, 'thisimpzlength', varargin{:}); % [EOF]