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

0 vote299 views1 answer
Convert to ascii
Python
110 votes285 views6 answers
Python json open file
Python
18 votes291 views6 answers
Factorial python
Python
0 vote282 views1 answer
Python var_dump
Python
0 vote278 views2 answers
Convert pdf folder to excell pandas
Python
0 vote294 views1 answer
ImportError: cannot import name 'get_column_letter' openpyxl
Python
26 votes272 views4 answers
Python send email with attachment
Python
2 votes567 views4 answers
Utf-8 codec can't decode byte python
Python
10 votes293 views4 answers
Multiply each element in list python
Python
6 votes274 views1 answer
Enter key press bind tkinter
Python