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Results tagged with python
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user 20090
Python is a high-level interpreted general programming language. Python has popular numerical and scientific libraries/packages, most notably numpy and scipy. The scipy.signal package is a powerful signal processing software collection. This tag covers the use of numpy, scipy, and other Python packages often used for SP computations.
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Analytical expression for step response of digital bessel filter
If I apply a digital Bessel filter to a perfect step function, I get something that looks like the following:
The green line is the input step response data sampled at 500kHz, the red line is obtai …
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Formula for Bessel low-pass filter coefficients
When I am filtering a signal in python, it has a built in function to generate bessel filter coefficients given a cutoff ratio and a filter order (number of poles). …
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Translating Bessel filter from python to C - odd behavior past the cutoff frequency
I use 64-bit doubles for everything in the C code, and my first guess was that maybe the python implementation uses 128-bit doubles, since the point at which the python code levels off is suspiciously … Another possiblity is that in my C code implementation, I have not implemented Gustaffson's method to ensure that the forward and backward filtered results are the same, which is done in the python version …
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