![]() ![]() Furthermore, correlation analyses show weak to moderate proportional relationships between the two systems and weak to strong proportional relationships between the two programs.īased on the literature and the proportional relationships and differences between the two systems and programs under consideration in this study, one can state that one can hardly compare frequency perturbation outcomes across systems and programs and amplitude perturbation outcomes across systems. In this study, we analyzed normal voices of Mongolian adults aged 20-79 years to determine the effect of age and gender on various acoustic measures including F0, jitter, shimmer, HNR, and CPPs. Results indicate statistically significant differences between the two systems and programs, with the Multi-Dimensional Voice Program yielding consistently higher measures than Praat. ![]() In the present study, perturbation measures provided by two computer systems (a purpose-built professional voice analysis apparatus and a personal computer-based system for acoustic voice assessment) and two computer programs (Multi-Dimensional Voice Program and Praat) were compared.Ĭorrelations and inferential statistics for seven perturbation measures (absolute jitter, percent jitter, relative average perturbation, pitch perturbation quotient, shimmer in decibels, percent shimmer, and amplitude perturbation quotient) in 50 subjects with various voice disorders are presented. In other words, Praat will tell you that there is almost no jitter, whereas MDVP will tell you that the jitter is of an almost pathological level. Praat will measure this sound as having a 'jitter' of 0.02 percent, whereas MDVP will measure this sound as having a 'jitter' of 0.6 percent. Recently revised to work iteratively across a directory and to provide HNR values. This script also determines pitch and formant values over the same intervals. The assessment of voice perturbation is influenced by several factors, including the type of recording equipment used and the measurement extraction algorithm applied. Comparison with other programs Voicing, jitter. Spectral Tilt Script for Praat which extracts H1-H2, H1-A1, H1-A2, and H1-A3 at even intervals in time over the duration of each textgrid-delimited region of a sound file. Frequency and amplitude perturbations are inherent in voice acoustic signals. ![]()
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