Generate periodic square and triangle waves using python

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Release date:2025/3/19　　　　　　　　　

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Explains how to generate a periodic square wave in python. The functions used are scipy's signal.square, sawtooth.

■Square wave

import numpy as np
from scipy import signal
import matplotlib.pyplot as plt

f = 5 # Frequency [Hz]
x = np.arange(0,1,0.001)
y = signal.square(2 * np.pi * f * x)

plt.plot(x, y)
plt.show()

The results are as follows.

■Triangle wave

import numpy as np
from scipy import signal
import matplotlib.pyplot as plt

f = 5 # Frequency [Hz]
x = np.arange(0,1,0.001)
y = signal.sawtooth(2 * np.pi * f * x, 0.5)

plt.plot(x, y)
plt.show()