The Effect of Hearing Disorder of Children's sound characteristics

The purpose of this research is to analyze hearing disorder on some characteristics of echoistic sound in two peer groups of children having hearing disorder and normal ones having the same age and gender. This is an analytical-descriptive sectional study about a range of children having mild to severe symptoms of hearing loss and normal children. The data related to the characteristics of echoistic sound was collected using speech studio software and larynograph. The T test was wed to compare the mean of each of the parameters in mind between the two groups. In children with a hearing loss, the basis of the frequency mean was 323.ok compared to the control group's which was 267.53. The frequency change was 10.5% compared to 1.52%. The duration of silence compared to 17.02 was 29.40%. The friction period was 17.55% compared to 34.52% and the duration of making sound was 14.71% compared to 28.65%. There was a significant difference (P>0.0001) between the basis frequency, periodical changes of the vocal cords vibration, the duration of silence, the friction period and sound making between the 2 groups.