Question about the gaussian filter taps

[EdFuentetaja]

Thank you Ruben for your wonderful job with GNUAIS. I was reviewing your work and I'll like to ask you how you came up with the FIR filter taps for the gaussian filter. I mean the taps that can be found at the top of receiver.c. I'm trying to come up with a gaussian filter design of my own cooking but I'm unable to replicate your taps. I have to admit that yours work really well, at least with the gnuais-stereo-2rx recording example.

Thanks!