Figure 2: An example of the shift of 3 rd formant at phonation of vowel /A/ before and after tonsilectomy, the shift is 230 Hz (MDVP Advanced, KAY Elemetrics).
Figure 2: An example of the shift of 3 rd formant at phonation of vowel /A/ before and after tonsilectomy, the shift is 230 Hz (MDVP Advanced, KAY Elemetrics).