title: Acoustic measures of dysphonic severity across and within voice types.
abstract: The purpose of the study was to explore an interaction between pathologic voice type and the acoustic prediction of dysphonic severity. One hundred and two phonatory samples, representing a wide range of laryngeal conditions, were categorized by listeners into three voice types: breathy, rough, and hoarse. A second group of trained listeners rated the severity of the samples on a 7-point scale. Twenty-five frequency- and time-domain measures were used to predict perceptual severity. Multiple regression analyses showed that the most useful measure for the prediction of severity across voice types was noise-to-harmonic ratio (NHR). The severity of individual voice types was predicted with differential results on the basis of both short- and long-term measures of perturbation.
authors.affiliation: Auburn University at Montgomery, Speech and Hearing Clinic, AL 36117, USA. vwolfe@edla.aum.edu
authors.forename: V
authors.initials: V
authors.lastname: Wolfe
authors.forename: J
authors.initials: J
authors.lastname: Fitch
authors.forename: D
authors.initials: D
authors.lastname: Martin
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D011237:Predictive Value of Tests; D012720:Severity of Illness Index; D013061:Speech Acoustics; D014832:Voice Disorders / Q000175:diagnosis*; D014833:Voice Quality