Sunday, 10 April 2016

algorithms - Use Butterworth and Chebychev filters


I need to calculate frequency response, phase response and apply to signals the Butterworth, Chebychev1 and Chebychev2 band-pass filters.


I'm developing in C++ with Qt, and I'm looking for algorithms or a (free) library to do that. I have my plotting solution, I just need the formulas.


The input values I have are the time/amplitude signal, the order of the filter and the low and high cut-off frequencies.




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