www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@allpass/isrealizable.m
function realizeflag = isrealizable(Hd) %ISREALIZABLE True if the structure can be realized by simulink % Author(s): Honglei Chen % Copyright 1988-2008 The MathWorks, Inc. realizeflag = true; % Limited support for AllpassCoefficients % c = coeffs(Hd); if isempty(find(length(c.AllpassCoefficients)==[0 1 2 4], 1)), warning(message('signal:dfilt:allpass:isrealizable:InvalidCoeffs')); realizeflag = false; end % [EOF]