To compare each patient different time's formant (F,F,F ), the first formant band width (B) of vowels /a/,/i/,/u/;
To compare each patient different time's formant (F,F,F ), the first formant band width (B) of vowels /a/,/i/,/u/;
比较各患者不同时间的元音/a/、/i/、/u/共振峰(F、F、F )频率及第一共振峰带宽(B);