Apply butterworth filter python

>>> from scipy import signal
>>> import matplotlib.pyplot as plt

Source: docs.scipy.org

Apply butterworth filter python

>>> b, a = signal.butter(4, 100, 'low', analog=True)
>>> w, h = signal.freqs(b, a)
>>> plt.semilogx(w, 20 * np.log10(abs(h)))
>>> plt.title('Butterworth filter frequency response')
>>> plt.xlabel('Frequency [radians / second]')
>>> plt.ylabel('Amplitude [dB]')
>>> plt.margins(0, 0.1)
>>> plt.grid(which='both', axis='both')
>>> plt.axvline(100, color='green') # cutoff frequency
>>> plt.show()

Source: docs.scipy.org

Similar codes

3 votes143 views2 answers
Command for python shell
Python
1 vote187 views2 answers
Filter titlecase django
Python
1 vote132 views1 answer
Postgresql connect with local machine in django
Python Django
0 vote148 views1 answer
Read_csv only certain columns
Python
0 vote143 views1 answer
Python mark function as no return
Python
0 vote177 views1 answer
Include app in django project
Python Django
0 vote111 views1 answer
From threading import thread ImportError: cannot import name 'thread' from 'threading' (/usr/lib/python3.7/threading.py)
Python
0 vote147 views1 answer
Pandas read_csv multiple separator
Python
2 votes137 views3 answers
Delete outliers in pandas
Python
-1 vote151 views1 answer
Count true in a dataframe
Python