In this work, the authors present their results on the acoustic detection of laryngeal diseases in children. Four types of parameters are studied : cepstral distances, error of Linear Prediction (LP), perturbation parameters (frequency and amplitude) and glottic noise estimators. French vowels /a/, /i/ and /v/ spoken separately and the sustained vowel /a/ are analyzed. The system is tested with 88 pathological subjects and 209 control subjects aged 5 to 12. A detection percentage of 96% was obtained with several parameters. The selected parameters changed with the sex. For the boys, the LP error is the best parameter. For the girl, the glottic noise estimator is the best parameter.

Keywords: Spectral Analysis, Cepstral Coefficient, Linear Prediction, Perturbation parameter, Pitch Stability, Noise Estimators, Dysphonia, Child