www.pudn.com > voiceprocessingtoolbox.rar > impulse02.m

% Plot an unit impulse signal 
 
n = -5:5; 
x = 0*n; 
index=find(n==0); 
x(index)=1; 
 
% plot 
stem(n, x); 
axis([-inf, inf, -0.2, 1.2]); 
xlabel('n'); 
ylabel('x'); 
title('Delayed Unit Impulse Signal \delta[n-k]'); 
set(gca, 'xticklabel', {'k-5', 'k-4', 'k-3', 'k-2', 'k-1', 'k', 'k+1', 'k+2', 'k+3', 'k+4', 'k+5'});