Feedback Vocal Rehabilitation Software Applied to Mobile Devices for Maximum Phonation Time

The key to the maximum phonation time (MPT) is how much lung capacity you have. If the MPT is too short, one cannot cut the sentences inappropriate time and lead to communication difficulties. However, there is no research on the effect of using feedback software for vocal rehabilitation in the past, especially for those who cannot increase their vital capacity through exercise. Therefore, we designed two tests for the experiment in our study. First, using mobile devices to collect MPT and Intensity Level (IL) data in a quiet space of 40 adults whose cognitive status is normal, and analyzing their characteristic changes. Then, we use the mobile device to perform MPT feedback rehabilitation and collect two characteristic data again. The purpose of our study is to understand the effects of using feedback vocal rehabilitation software.