Re: Power/Phase to FFT Coefficients?

Hi Matt!

> One of the suggestions in https://github.com/scipy/scipy/issues/16191 
> <https://github.com/scipy/scipy/issues/16191> was to add "helper 
> functions within [scipy.fft] that 1) converts the fft coefficients to 
> power (V**2/Hz) and 2) converts power and phase to fft coefficients".
> 
> Sometimes we avoid simple convenience functions, but there are already a 
> few other "helper functions" in scipy.fft.
> https://docs.scipy.org/doc/scipy/reference/fft.html#helper-functions 
> <https://docs.scipy.org/doc/scipy/reference/fft.html#helper-functions>
> 
> Does this sound like an appropriate addition, or too simple to justify 
> the development effort and API expansion?

If the helper functions can be written in a way that is completely 
unit-agnostic (as is the case with fftshift/fftfreq), then I think that 
could be a good addition. Dealing with explicit units should not be 
scipy's job (at least that's my gut feeling).

Cheers,
   Martin

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