Purpose: Relative fundamental frequency (RFF) is an acoustic measure that is sensitive to functional voice differences in adults. The aim of the current study was to evaluate RFF in children, as there are known structural and functional differences between the pediatric and adult vocal mechanisms. Method: RFF was analyzed in 28 children with vocal…

Purpose: Vocal roughness is often present in many voice disorders but the assessment of roughness mainly depends on the subjective auditory-perceptual evaluation and lacks acoustic correlates. This study aimed to apply the concept of roughness in general sound quality perception to vocal roughness assessment and to characterize the relationship…

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)

This study analyzed production of a long vowel sound within Finnish words by normal or dysphonic voices, using the Self-Organizing Map, the artificial neural network algorithm of T. Kohonen which produces two-dimensional representations of speech. The method was found to be both sensitive and specific in the detection of dysphonia. (Author/JDD)