F0 pitch detection and note segmentation

this project combines F0 detection and note segmentation,it achieve a good result.

onset detection method cite this paper

@conference {rgong2018singing,
	title = {Singing voice phoneme segmentation by hierarchically inferring syllable and phoneme onset positions},
	booktitle = {Interspeech 2018},
	year = {2018},
	month = {02/09/2018},
	address = {Hyderabad, India},
	url = {https://arxiv.org/pdf/1806.01665.pdf},
	author = {Rong Gong and Xavier Serra}
}