The means of frequency and severity the VTDp and the means of NHS were statistically different between the dysphonic and normal voice groups ( P 0.05). The participants also asked to complete the VTDp scale and the NHS questionnaire. CPP and CPPS were calculated in these three vocal tasks using the “ Praat” software.
MethodsĢ23 participants (159 with and 64 without dysphonia) were asked to utter the vocal tasks namely vowels /a/ and /e/, six standard sentences, and a non-standard connected speech sample. This study aimed to investigate the relationship of cepstral analysis (Cepstral Peak Prominence and Cepstral Peak Prominence-Smoothed ) with voice self-assessments (The Persian version of vocal tract discomfort scale and non-standard hoarseness self-assessment questionnaire).
