Traditional evaluation (TE) of speech intelligibility
Traditional evaluation (TE) of speech intelligibility was measured by four adult raters. Based on the different degrees of familiarity with deaf speech, the raters were divided into three different levels: the level-1 rater is very familiar with the speech spoken by deaf people, the level-1 rater is marked as SIS1; the level-2 rater has limited experience with the speech spoken by deaf people, and marked as SIS2; the level-3 rater has no experience with the speech spoken by the children with hearing loss, and marked as SIS3. In our study, the four raters contained two level-3 raters, one level-1 rater and one level-2 rater.