Voice measurement with computer and analysis in normal adult

Acoustic parameters of 90 normal adults (20-50 years old) were measured with computer. The results showed that fundamental frequency (F0), frequency perturbation quotient (FPQ) and amplitude perturbation quotient (APQ) between male and female in same ages were statistically significant difference. F0 and FPQ were bigger but APQ was smaller in female. FPQ and APQ were significantly related to F0. OCT wasn't obviously different among sexes or ages. The article indicated that voice of adults and the vibration of vocal cords had distinctive characteristics in different sexes or mode of phonation, which could provide objective methods and grounds for clinical voice evaluation.