fili.js
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Chebyshev Type II support
Thank you for the awesome package. It would be great if it could design Type II Chebyshev filters (inverse Chebyshev filters) https://en.wikipedia.org/wiki/Chebyshev_filter#Type_II_Chebyshev_filters_(inverse_Chebyshev_filters)
Inverse Chebychev lowpass filters can be calculated out of Type I filters by lowpass-highpass transform and mirroring. I did not implement these functions, yet. I will have a look into it.