Normalisation wiener filtering

[D1mme]

Hi,

Thanks for this awesome package! 💃

When running the iterative Wiener filter (denoise.iterative_wiener.apply_iterative_wiener), I noticed that the amplitude of my output signal got unexpectedly low. I think there might be a normalisation step missing. When rescaling the output with sqrt(nfft) , the scale of the output matches the scale of the input again (I tried this for nfft=512,1024, and 2048 ).

Cheers,
Dimme

[fakufaku]

Ouch, thanks for reporting.
Would you be willing to create a PR fixing this?