Python Digital Filtering

Utilities

The scripts on this page require the utility modules

tompy.py
signal_utilities.py

* * *

Butterworth Sixth-order Filter

The filtering relationship can be implemented in Python by importing the lfilter function from scipy.

from scipy.signal import lfilter

A script is given at filter.py

A GUI script using Tkinter is given at: Butterworth_filter_gui.py

See also: Butterworth Filter Blog Post

* * *

Bessel Two-pole Lowpass Filter

A script is given at  Bessel_lowpass_filter.py

See also: Bessel Filter Blog Post

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Mean Filter

A script is given at mean_filter.py

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– Tom Irvine

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