Purpose: In this study, the authors aimed to (a) determine whether phonatory airflows and estimated subglottal pressures (est-P[subscript sub]) for women with primary muscle tension dysphonia/aphonia (MTD/A) differ from those for healthy speakers; (b) identify different aerodynamic profile patterns within the MTD/A subject group; and (c) determine…

Vowels produced by four deaf women were analyzed spectrographically to study acoustic correlates of vocal tract deformation. Formant structure evaluated on isovowel lines disclosed consistent neutralization of vowels, which is attributed to observed restricted horizontal movements of the tongue within the oral and pharyngeal cavities. (Author/JDD)