Deduce machine current changes

This is replacing the logic of the interpolation by using numpy.interp instead of the function compute.

In terms of optimization:

old: 12 ms ± 89.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

new: 8.21 ms ± 58.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

Closes #179 (closed)