![]() ![]() Analyses of the agreement between predicted and perceptual severity ratings indicated that the majority of differences were within +/- 1 standard deviation from the mean difference. Predicted severity scores were strongly associated with perceived dysphonia severity ratings for pretreatment, posttreatment, and change in dysphonia severity. Predicted severity ratings were also compared to mean perceived severity ratings determined by a group of judges. The purpose of this experiment was to assess the ability of an acoustic model composed of both time-based and spectral-based measures to track change following voice disorder treatment and to serve as a possible treatment outcomes measure.Ī weighted, four-factor acoustic algorithm consisting of shimmer, pitch sigma, the ratio of low-to-high frequency spectral energy, and a measure of the cepstral peak was used to predict dysphonia severity in pre- and post-treatment vowel samples from 88 women with primary muscle tension dysphonia treated by manual circumlaryngeal therapy.
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