Generating a Noisy Chirp

This example shows how to generate a chirp signal, with some analytical gaussian noise, and the usage of the sigmerge function to combine them.

Figure 1.4 from the tutorial.

from tftb.generators import fmlin, sigmerge, noisecg
import matplotlib.pyplot as plt
import numpy as np

# Generate a chirp signal

n_points = 128
fmin, fmax = 0.0, 0.5

signal, _ = fmlin(n_points, fmin, fmax)

# Noisy chirp

noisy_signal = sigmerge(signal, noisecg(128), 0)
plt.plot(np.real(noisy_signal))
plt.xlim(0, 128)
plt.title('Noisy chirp')
plt.ylabel('Real Part')
plt.xlabel('Time')
plt.grid()
plt.show()