Results of the acoustic analysis of the vowel /æ/ samples performed before 6 and 12, months after the implantation in children implanted after the age of 4 years (N = 15).

Table 5: Results of the acoustic analysis of the vowel /æ/ samples performed before 6 and 12, months after the implantation in children implanted after the age of 4 years (N = 15).

Acoustic parameter	Before CI (mean/S.D.)	6 months after CI(mean/S.D./p)	12 months after CI(mean/S.D./p)
f0 (Hz)	289.96/71.26	317.77/43.07/0.178	311.85/70.08/0.599
JIT (%)	1.34/0.78	1.34/0.95/0.997	1.33/1.11/0.458
SH (%)	3.15/1.24	3.65/1.25/0.402	3.24/1.43/0.494
NHR	0.11/0.01	0.12/0.01/0.269	0.13/0.04/0.274