成人骨性Ⅲ类错(牙合)畸形患者发音特征的声学分析
王立新;高晓辉;陈仁吉
【期刊名称】《口腔医学》 【年(卷),期】2012(032)004
【摘要】目的 通过对正常发音者与成人骨性Ⅲ类错(牙合)畸形患者发音的声学特性比较,探讨其发音规律和机制.方法 针对20名正常对照组和16名骨性Ⅲ类错(牙合)畸形患者的语音样本进行元音和辅音的声学分析,将结果进行统计学比较.结果 成人骨性Ⅲ类错(牙合)畸形患者中男性组元音/i/的第一共振峰频率明显高于正常对照组(P＜0.01),而男女两组元音/u/的第二与第三共振峰频率也高于正常组(P＜0.05).所观测辅音中成人骨性Ⅲ类错(牙合)畸形患者出现语图错误的总人次占44.3％,其中3个塞擦音/q/、/ch/、/s/发音错误人次最高,而且辅音/c/、/s/的下限频率明显下移(P＜0.01),/s/噪音能量强频区位置下降(P＜0.01).结论 骨性Ⅲ类错(牙合)畸形患者在发部分元音时,可能存在舌位低且靠前的情况,在发舌面、舌尖以及卷舌塞擦音和擦音时,唇舌软组织可能不能形成足够的摩擦力量与摩擦时间.%Objective To investigate pronunciation patterns and mechanisms in patients with skeletal class HI ntalocclusion. Methods 16 skeletal class Ⅲ patients and 20 normal control cases were chosen to find out the different pronunciation features between the two groups based on the acoustic analysis of vowels and consonants. Results Firstly ,The first formant frequency of vowel /i/ of skeletal class Ⅲ male patients was significantly higher than that of normal adults (P <0.01) ,and the second and third formant frequencies of vowel /u/ of
成人骨性Ⅲ类错(牙合)畸形患者发音特征的声学分析
