Acoustic features in the identification of the hypernasality of children
Keywords:Acoustic features, hypernasality, resonance, pathology
The analysis of the different acoustic characteristics and their influence on the automatic identification of hypernasality is presented. The methodology of effective selection of characteristics includes the pre-processing of the initial space of observations and it is based on the analysis of statistical independence. In parallel, the synthesis of a specialized diagnostic feature is proposed, based on the analysis of the acoustic emission of the hypernasal voice. As a result, it is obtained that, although the acoustic characteristics allow differentiating the pathology with sufficient precision, the proposed characteristic with a lower level of computational complexity, does not require samples for training and allows differentiating the degrees of resonance compromise of the pathology.
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