On vocal drop-out and voice quality in children. Voicing sustainment and voice quality in children

•  The present perceptual investigation pursues the question wether the evaluation of a child's voice as hoarse, breathy or hyperfunctional can be correlated to the degree of non-periodical sections in the signal based on the lack of regular oscillations of the vocal folds. The results show that this is not the case: children with clearly hoarse voices produce a stable and measurable fundamental frequency. In addition, children who show a tendency toward unstable fundamental frequency are not evaluated as hoarse, neither breathy nor hyperfunctional.   

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