function [a] = latcf2df(K)
% All-Zero Lattice form to FIR Direct form Conversion
% ---------------------------------------------------
% [a] = latcf2df(K)
%  a = FIR direct form coefficients (impulse response)
%  K = Lattice filter coefficients (reflection coefficients)
%
%-----------------------------------------------------------
% Copyright 2000, by Dimitris G. Manolakis, Vinay K. Ingle,
% and Stephen M. Kogon.  For use with the book
% "Statistical and Adaptive Signal Processing"
% McGraw-Hill Higher Education.
%-----------------------------------------------------------


M = length(K);
J = 1; A = 1;
for m = 2:1:M
	A = [A,0]+conv([0,K(m)],J);
	J = fliplr(A);
end
a = A*K(1);