An automatic singing skill evaluation method for unknown melodies using pitch interval accuracy and vibrato features.

Tomoyasu Nakano Masataka Goto Yuzuru Hiraga An automatic singing skill evaluation method for unknown melodies using pitch interval accuracy and vibrato features. 2006 INTERSPEECH https://doi.org/10.21437/Interspeech.2006-474 conf/interspeech/2006 db/conf/interspeech/interspeech2006.html#NakanoGH06