[The inverse filtering in the investigation of the laryngeal pathology:a quantitative study of the airflow of glottogram of various intensity].

Inverse filtering is a method of investigate the larynx function that reflects the vibratory movement of the vocal folds by approximately reconstruct the glottal excitation wave. Basically the method creates a filter which characteristics revert the influence of the supraglottal tract and the radiation component on the glottal wave. In this report different quantitative parameters of the flow glottogram (FGG) are studied by means of a computer based program named Superscope in two subjects, one without pathology and another affected of a vocal polyp, at different intensities.