Abstract
To improve a naturality of electrolarynx voice, we have proposed a new electrolarynx which can control the intonation of the voice by laryngectomees using their expiration. First, we investigated the intonations of two spoken sentences and the ability of expiration pressure control. Subjects were six laryngectomees who used these electrolarynxes for the first time. From the results, four of the laryngectomees could suitably produce the intonation for each sentences. We found that the pressure-to-pitch transform function was necessary to be modified according to the characteristic of each laryngectomee. Based on the above results, we designed a practical electrolarynx with a pitch control function.
