Pitch phonology -- ispras/lingvodoc-react#1102 (#1501)

* next

* fix

* next

* next1

* next

* refactoring

* next steps

* next steps

* fixes

* next steps

* some final

* cleanup

* fixes

* hotfix

* hotfix

* minor

* cubic spline interpolation

* fix

* debug

* debug

* debug and fixes

* fixes

* Fixes

* Debug

* Normalized signal

* Plot windowR

* fixes

* more fixes

* much more

* fft autocorrelation maybe like this

* debug

* most correct

* get means for xlsx

* move field to the left

* no vowel_selection

* cleanup

* xi and xl

* xi and xl in xlsx

* fix

* cleanup

* minor

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Co-authored-by: Ivan Beloborodov <[email protected]>