I am new to DSP and i am trying to take a wav (human speech) file and apply ARMA filter and plot its PSD graph in python.
I see that there are a lot of AR implementations but almost none ARMA. I found only statsmodel that implemented ARMA but it requires the data to be stationary (but sound with lags of 30 is almost stationary)
Does anyone have a working piece of code that i can use to plot? If not, i will be happy to get some reference on how to implement it.
Thanks in advance!