Before installing the package, I read the code and I got a question.
There is double dot in the code when the code calls a module, the module is tools.
What is the double dot in python?
The code wrote from ..tools import *.
You can find it here, https://github.com/synergetics/spectrum/blob/master/src/conventional/cum2x.py
The code is computing the bispectrum.
And do you know the other code analysing a wave interaction for python such as HOSA in MATLAB?