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  1 import matplotlib.pyplot as plt
  2 import numpy as np
  3
  4
  5 Fs = 8000
  6 f = 3
  7 sample = 8000
  8 x = np.arange(sample)
  9 y = np.sin(2 * np.pi * f * x / Fs)
 10 plt.plot(x, y)
 11 plt.xlabel('sample(n)')
 12 plt.ylabel('voltage(V)')
 13 plt.show()

 

 

 

 

 

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