【摘要】 目的分析腭裂语音的频谱特点,提示其语音缺陷,为腭裂患者的语音评价及治疗提供理论及临床支持。方法应用语音频谱分析系统分别对正常儿童、腭裂术前患者和腭裂术后患者的元音共振峰频率值和辅音嗓音起始时间(VOT)的频谱特点进行分析。结果发元音/a/时,正常组及腭裂患者手术前、后组的前3个共振峰频率值无显著性差异(P>0.05);发元音/i/时,腭裂术前组F2、F3低于正常组,差异有显著性(P<0.05),腭裂术后组F2、F3低于正常组,高于术前组,但差异无显著性(P>0.05);发元音/u/时,腭裂术前组F2低于正常组,但无显著性差异(P>0.05)。对照组VOT的出现率达100.0%,而腭裂术前组仅25.0%(9/36),腭裂术后组42.1%(16/38)。结论声学频谱分析技术有助于找出腭裂患者的不良发音习惯及判断腭咽闭合的完善与否,从而对腭裂患者的语音评价和治疗提供一定的理论和临床价值。更多还原

【Abstract】 Objective To analyze the spectrum features in cleft palate patients through sonagraph and then hint their defects of speech.Then theoretical and clinical support will be provided to the cleft palate patients for their speech evaluation and therapy.Methods The sensitive utterance studies were formant of vowels and voice onset time(VOT)of consonant,which were analyzed by speech spectrum analysis system.The three groups of children consisted of normal children,preoperative cleft palate patients and postoperative patients and they were analyzed.Results The first three formants of /a/had no significant difference(P>0.05)in normal children,preoperative cleft palate patients and postoperative patients.F2,F3 of /i/in preoperative cleft palate patients were lower than in normal children and showed significant difference(P<0.05),and F2,F3 of /i/in postoperative patients were lower than in normal children but higher than preoperative patients,but it had no significant difference(P>0.05).F2 of /u/in preoperative patients was lower than in normal children but showed no significant difference(P>0.05).The frequency of VOT was up to 100.0% in the control group and it was only 25.0%(9/36)in preoperative patients,and 42.1%(16/38)in postoperative patients.Conclusion Acoustic spectrum analysis system could help to find the uncorrected pronunciation habits of cleft palate patients and find if the patients’ velopharyngeal closure was consummate.Then theoretical and clinical support will be provided to the cleft palate patients for their speech evaluation and therapy.更多还原