function y = FIRCalcHighpass(omega, N);
%
% y = FIRCalcHighpass(omega, N);

y_lp = CalcSincFilter(omega, omega, N);
y_hp = -y_lp;

if mod(N, 2) == 0
    error ('Even N is not supported');
else
    y_hp((N-1)/2+1) = 1 + y_hp((N-1)/2+1);
end

y = (y_hp).*wkaiser(N, 8.0);