The results support the clinical and research use of CPP and CPPs as a quantitative measure of voice quality in populations with motor speech disorder.Īcoustic analysis Cepstral measures Motor speech disorders Voice disorders.Ĭopyright © 2014 The Voice Foundation. The following syntax can be used to select any voice, regardless of provider. In addition, there was an indication that they performed better in relation to asthenia, which might be particularly relevant for the current speaker group. Changing to Amazon Polly or Cepstral Voices. To investigate the validity of cepstral analyses against other conventional acoustic measures of voice quality in determining the perceptual impression in different motor speech disordershypokinetic and ataxic dysarthria, and speech tasksprolonged vowels and connected speech. The results of this study are consistent with the results of other studies investigating the same measures in speakers with nonmotor-related voice pathologies. There were no significant differences in any parameters across the two speaker groups. Sustained vowel production produced a higher number of significant correlations across all parameters other than connected speech, but task choice did not affect CPP and CPPs results. Comparison of biomechanical modeling of register transitions and voice instabilities. Statistical analysis involved correlations between perceptual and acoustic measures, as well as determination of differences across speaker groups and elicitation tasks.ĬPP and CPPs results showed greater levels of correlation with overall dysphonia, breathiness, and asthenia ratings than the other acoustic measures, except in the case of roughness. Cepstral peak prominence: a more reliable measure of dysphonia. In addition, acoustic measures of cepstral peak prominence (CPP), smoothed CPP (CPPs), harmonics-to-noise ratio (HNR), shimmer %, shimmer dB, amplitude perturbation quotient (APQ), relative average perturbation (RAP), jitter, and pitch perturbation quotient (PPQ) were performed. Prolonged vowel productions and connected speech samples (reading passages and monologues) from 43 participants with Parkinson disease and 10 speakers with ataxia were analyzed perceptually by a trained listener using GRBAS.
To investigate the validity of cepstral analyses against other conventional acoustic measures of voice quality in determining the perceptual impression in different motor speech disorders-hypokinetic and ataxic dysarthria, and speech tasks-prolonged vowels and connected speech. Cepstral analysis of hypokinetic and ataxic voices: correlations with perceptual and other acoustic measures J Voice.