Research of the effect of cochlear implant and hearing aid on voice quality of hearing impaired children / 临床耳鼻咽喉头颈外科杂志

ABSTRACT

Objective:To discuss the effect of cochlear implant and hearing aid to voice quality.Method:Four groups of randomly selected 73 subjects were compared. The groups comprised cochlear implant children, children using hearing aids, normal hearing children and deaf children with no hearing instrumention. The latter two groups were control groups. Each subject was required to phonate // about 3 s using 'voice assessment' to record the sound, and following voice acoustice variables were analysed F0,SDF0,Jitter,Shimmer,NNE,HNR,SNR.Result:Voice F0 of children with cochlear implant was significantly lower that the other three groups(P0.05);SDF0 of cochlear implant group and hearing aids group were significantly larger than the normal hearing group and deaf children group with no intervention(P0.05),which means that cochlear implant and hearing aid could have affected the SDF0 of female children more than those of male children. There were no significant difference among all the four groups about voice quality variables Jitter,Shimmer,NNE,HNR,SNR.Conclusion:Cochlear implant and hearing aid mainly change the voice F0 and/or SDF0, and have no effect on the voice quality variables.