function wav = make_input(hz)
    % make simple, visible "wav" files for use with plot commands
    % in debugging.  Careful of that pesky N global, sorry.  It's
   % the length of the output array.


global N;
wav = zeros(N,2);
for i = 1:N
%    wav(i,1) = i;
%    wav(i,2) = N-i;
    wav(i,1) = sin(ind2ang(i,hz,0));
    wav(i,2)  = wav(i,1);
end

