# Melodic or tonal pitch contour tracking?

What algorithms or methods can be used for the tracking of audio pitch contours? (Such as in musical vibrato and glissando, or for tonal vowels in languages such as Chinese?). Will a PLL work even for pitched tones that have a weak or missing fundamental? Or is there a more suitable tracking method?

There are $n$ number of methods readily available to determine pitch track but a simple way is to use PRAAT tool to get the pitch track and it is easy to visualize pitch track...