Acoustic, perceptual, aerodynamic and anatomical correlations in voice pathology.
A principal components analysis was performed on a set (10) of acoustic, aerodynamic, perceptual and laryngoscopic data obtained from 87 dysphonic patients. Two principal components were clearly identified: the first represents in some way the glottal air leakage, resulting in turbulent noise, particularly obvious in higher spectral frequencies, and giving the perceptual impression of breathiness; the second accounts rather for the degree of aperiodicity in vocal fold oscillation, reflected in jitter measurements and with a perceptual correlate of harshness or roughness. Morphological changes of vocal folds correlate more closely with this second principal component. Among acoustic parameters, harmonics-to-noise ratio in the formant zone and magnitude of the dominant cepstrum peak seem to integrate to some extent the effects of both principal components.
Dejonckere
P H
PH
Institute of Phoniatrics, Universiteit Utrecht, The Netherlands.
Lebacq
J
J
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007828:Laryngoscopy; D008297:Male; D010699:Phonation; D013018:Sound Spectrography / Q000379:methods / Q000706:statistics & numerical data; D013061:Speech Acoustics; D014827:Vocal Cords / Q000473:pathology; D014832:Voice Disorders / Q000175:diagnosis*; D014833:Voice Quality