Filter coefficient derivation for fffb~

Hello,

I need implement the filtering from fffb~ in a different language (e.g. python or matlab) in order to replicate a large number of audio files for a research project and to calculate the frequency responses for the filters that generated those files as well. I'd reaaaaallly like to avoid trying to do this in Max since that sounds like a terrible pain in the ass, and would be very, very easy in Matlab or Scipy.

Does anyone know the equations used for the derivation of the filter coefficients? (I tried simple 2nd order bandpass filters with coefficients derived the RBJ cookbook, but they didn't match.)

Can someone from C74 possibly share these with me? Thanks!

Mark