Digital Filtering

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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


Mean Filter

A script is given at: mean_filter.py



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