1.5.12.2. Resample a signal with scipy.signal.resampleΒΆ

scipy.signal.resample() uses FFT to resample a 1D signal.

Generate a signal with 100 data point

import numpy as np
t = np.linspace(0, 5, 100)
x = np.sin(t)

Downsample it by a factor of 4

import scipy as sp
x_resampled = sp.signal.resample(x, 25)

Plot

import matplotlib.pyplot as plt
plt.figure(figsize=(5, 4))
plt.plot(t, x, label="Original signal")
plt.plot(t[::4], x_resampled, "ko", label="Resampled signal")
plt.legend(loc="best")
plt.show()
plot resample

Total running time of the script: (0 minutes 0.224 seconds)

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