Intelligibility of artificial electronic larynx speech as produced over the telephone

Abstract

Currently, there are several methods of acquiring oral speech communication following total laryngectomee. These include esophageal speech, air bypass, tracheo‐esophageal puncture, and pneumatic and electronic larynges. Historically, esophageal speech has been the method of choice with the electronic larynx relegated to use by those unable to learn esophageal speech. This attitude is changing and the use of electronic larynges has become more accepted by laryngectomees and service professionals. Recent literature concerning artificial larynges has dealt with comparing the intelligibility of these devices with other users, esophageal speakers, and normals. Some studies suggest that electronic larynges be used for telephone conversations as they provide greater intensity and intelligibility. The present study compares the intelligibility of four available electronic larynges when recorded over the telephone and under high fidelity conditions. Data analysis will provide percent intelligibility scores for the four devices under both conditions and spectral analysis will provide information relative to the perceived intelligibility of each device.