【joe】評論
PTP increases as vis☆☆☆☆☆☆ ...
【小紅帽恰恰】評論
https://www.researchgate.net/figure/The-relationship-between-fundamental-frequency-and-PTP-across-four-separate-studies_fig7_221772361
【JC】評論
對大部分人來說,發聲基頻(fundamental frequency)降低時,PTP 會提高→下降PTP與F0成正比https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4629990/