腭裂语音元音共振峰特点的分析

Objective To analyze the formant frequency of vowels in the sequence therapy of patient with cleft palate. Methods The formant frequency of vowels [a],[e],[i],[u] of normal children and postoperative patients with and without speech therapy was measured and analyzed by VS-99.Results ①The mean value of F1,F2,F3 of [a] did not show significant difference among the three groups (P>0·05).②The difference of mean value of [e] was significant between control group and pre-speech-therapy group, and between pre-speech-therapy and post-speech-therapy group (P0·05). The mean value of the formant in post-speech-therapy was higher than that of pre-speech-therapy.③The difference of mean value of [i] was significant between pre-speech-therapy and post-speech-therapy (P0·05).Conclusion Surgical repair of cleft palate cannot make all patients obtain perfect Velopharyngeal competence (VPC), while speech therapy can improve patient’s pronunciation. Speech spectrum analysis can judge the effect of cleft palate therapy objectively.