import numpy as np
N = 256
window = np.array([0.5 - 0.5 * np.cos(2 * np.pi * n / (N - 1)) for n in range(N)])
print([int(i) for i in list(window*1023)])


a = [1, 1, 1]
c = np.convolve(window, window)
print(len(c))