We give an overview about several experiments on the incidence of laryngeal pathology on the speech signal. More precisely, the results presented here are related to the impact on the overall discrimination performance between normal and dysphonic subjects of the speech material choice and of several possible pretreatments of the speech signal. The features extracted from isolated sentences do not necessarily seem more discriminative, provided that the pretreatments applied allow for a sufficiently large band width. Moreover, the results reveal slight inter-vowel differences. Finally, all pretreatments do not appear equally well adapted to speech signals provided by both sexes.
Female Humans