TUSK can measure the characteristics of Fundamental frequency (F0 or FO) estimators. Please see the concept of TUSK.
[1] Masanori Morise and Hideki Kawahara, TUSK: A framework for overviewing the performance of F0 estimators, Proc. INTERSPEECH2016, pp. 1790-1794, 2016.
TUSK does not disallow the conventional evaluation using electroglottography (EGG) signal. We reccomend that TUSK is used supplementarily to measure the characteristics.
This source code is released under the modified-BSD license. There is no patent in all algorithms in TUSK.