关键词: 腭裂;腭咽闭合功能;言语声学

    摘 要:目的 研究腭裂术后不同语音清晰度患者元音共振峰模式的差异，以及元音第三共振峰同腭咽闭合不全率的关系. 方法 用Matlab语言编制了声谱分析程序.将25例术后腭裂患者依语音清晰度分成分成语音缺陷组(IAr)和语音清晰组(NAr);另选正常儿童15例作为对照组(N).用分析程序观测3组儿童发[i]时的共振峰模式并测定F1，F2，F3的值.按发[i]时RVPI10%为界，将同时有腭咽图像及声音资料的患者20例分成腭咽闭合完全组(A组)及腭咽闭合不全组(B组).比较两组患者发[i]时F3的值. 结果 3组儿童发[i]时，F1均无差异;3组F2值均有明显差异，按值大小分别为N>NAr>IAr.IAr组F3值明显小于NAr组及N组，NAr组同N组无区别.腭裂术后患者多在1000Hz左右出现一异常额外共振峰.A组患者F3值明显高于B组. 结论 腭裂术后患者第二共振峰同语音清晰度有明显的关系，低频区异常额外共振峰的出现是腭裂术后语音频谱图的特征性表现.发[i]时F3值可以作为评价腭咽功能的指标.

    Study on spectrum features of postoperative CP pa┐tients

    FENG Xing-Hua ，WEI Jian-Hua ，WANG Bing，MA Wei

    1 Department of Maxillofacial Surgery，2 Department of Information，Stomatological College，Fourth Military Medical University，Xi'an710033，China

    Keywords:cleft palate;velopharyngeal function;speech a-coustics

    Abstract:AIM To study the spectrum features of formant pattern of vowel and the relationship between RVPI and F3in postoperative patients.METHODS A spectrum-analyzing

    program was coded using the acoustic functions Matlab lan-guage provided.25postoperative CP patients were grouped by speech articulation ......