import matplotlib.pyplot as plt
from numpy import arange
from sk_dsp_comm.sigsys import drect
n = arange(-5,5)
x = drect(n, N=3)
plt.stem(n,x)
plt.show()
#
# Shift the delta left by 2.
#
x = drect(n+2, N=3)
plt.stem(n,x)