Questions regarding pitch estimators

[kkp15]

Hello r9y9, Thank you for your contribution.

I was wondering if the algorithms such as rapt or swipe use "center=True" option like librosa.
I tried to search how your algorithm works but it seems kind of hard to find it in the code.

1. Could you please tell me if the algorithm does zero-padding at the very starting and ending points of the waveforms?
2. Could you please tell me what the window size of those algorithms is?

Thank you again!
Looking forward to you answer.