Acoustic analysis in the diagnosis of voice disorders in children

The main aim of this study was to describe the changes in acoustic analysis in diagnosing voice disorders in children. The secondary goal was the atte mpt at differentiation of organic and functional disorders by means of acou stic analysis. The study included 112 children in treated due to laryngeal papilloma, gastro-esophageal reflux, topic disease and noduli vocales. The following values have been determined: basic frequency F-o, jitter, shimmer , F-o tremor and the harmonics to noise ratio (HNR). The study results conf irmed that the HNR value was the most sensitive indicator of changes in the voice organ. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.