samer@32: function y=zeropad(n,x)
samer@32: % ZEROPAD - Function to zero pad a signal
samer@32: %
samer@32: % y=zeropad(n,x) : adds n zeros to head and tail of signal
samer@32: % If n<=0, y=x;
samer@32: 
samer@32: if n>0,
samer@32: 	y=[zeros(n,1); x(:); zeros(n,1)];
samer@32: else
samer@32: 	y=x(:);
samer@32: end