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samples with the same length and adding it to the original signal. Let’s generate noise with mean 0 and standard deviation 0.5: noise = [0.1, -0.4, 0.2, 0.3, -0.2] We can then add this noise to the signal element-wise to get the noisy version of the signal: x_noisy = x + noise = [2.1, 2.6, 4.2,