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autocorrelation-based O(NlogN) pitch detection

4 months ago

Removed SWIPE' algorithm
- It is not based on autocorrelation, I skipped it in all of the tests, and my implementation was basically copy-pasted from kylebgorman/swipe: just use their code instead!
Fix autocorrelation (in YIN and MPM) for power-of-two sizes in FFTS (see https://github.com/anthonix/ffts/issues/65) by using r2c/c2r transforms (addresses https://github.com/sevagh/pitch-detection/issues/72 reported by @jeychenne)
Fix PYIN bugs to pass all test cases (addresses @jansommer's comments in https://github.com/sevagh/pitch-detection/pull/84#issuecomment-1843623594)
Added many more unit tests, all passing (228/228)