Can Cochlear Implantation Improve Voice in Speaking Children?

After cochlear implantation fundamental frequency did not change significantly. However, an improvement was noticed in measurements of jitter (p = 0.006) and shimmer (p = 0.021) as early as 6 months after the implantation. The noise-to-harmonic ratio improved (p = 0.010) 12 months after implantation. The children implanted before or at the age of 4 years showed a significant improvement in jitter (p = 0.003) and shimmer (p = 0.004) as early as 6 months noise-to harmonic ratio (p = 0.021) 12 months after implantation. In children implanted after the age of 4 years the significant changes was detected in f0 (p = 0.045), 12 months after the implantation and in Shimmer (p = 0.017), also 12 months after the implantation.