Analysis of the acoustics of hyper-nasality and also abnormal articulation of cleft palate patients

本研究从1999财政年度开始，对腭裂患者与鼻音异常相关的发音异常进行了研究，目的是利用CSL计算机系统和鼻音计对音质进行分析，并对鼻音异常的音质评价和发音障碍的改善提出指导意见。我们在第一会计年度针对腭裂患者进行了购买的Nasometer与CSL计算机系统建立的lecture之间的联动（同步测量）的语音样本的采集、测量，与2000会计年度相比，有更清晰的超鼻音。对采集并分离的声音样本进行鼻音和口音的频率特征的比较，采用麦克风拾取系统，Nasometer，利用掌握患者的正常成人和正常人的声音，围绕腭裂手术的方法学，我们做了检查，宣布了超鼻音的声学特征。因此，鼻音的发声强度呈现出明显的大值，并且出现了第二、第三峰频率下降的趋势。这一趋势尤其明显。第三共振峰频率换句话说第三共振峰频率的下降与高鼻音的声学变化密切相关。此外，这一趋势在强势案例中表现得非常明显。（Acoustic Nasality ++，鼻平衡评分60%或以上）像高鼻音，声学和鼻音的强化可以想象，第三峰频率与正常成人相比有下降和关系，甚至鼻平衡评分。第二和第三形成峰频率的下降即使在观察到声门闭锁的情况下也很明显，与过去关于鼻音过度和声门闭锁关系的报道一致。并在千叶市召开的第45届日本口腔颌面外科大会上发表了本研究的主要观点。少

This research is abnormal articulation associated with hyper-nasality and it that are abnormal voice of the cleft palate patients the research that We are doing from the fiscal year 1999 for the purpose of that analyzes like acoustics by using CSL computer system and also Nasometer and make the guideline of the improvement of the evaluation and articulation disorders of the acoustics of hyper-nasality.We have done the picking, measuring of the voice sample targeting the cleft palate patients who is doing the gearing connetion (the synchronous measurement) between Nasometer of the purchase and lecture established of CSL computer system in the first fiscal year and have clearer hyper-nasality than the fiscal year 2000.Doing the comparison of the frequency characteristic of nasal voice and oral voice that were gathered and were separate the voice sample by using the microphone system of picking, Nasometer, by using the normal adult that is mastering the patients and also normal voice of a … More round the cleft palate operation for methodology, we did examination to announce the characteristic of hyper-nasality like acoustics.As a result, the utterance strength of nasal voice is showing a clearly big value with the trend that the second and the third formant frequency fall off was seen. Especially the trend was observed strongly with.The third formant frequency in other words it was suggested that the decline of the third formant frequency is getting involved in the change of the acoustics of hyper-nasality strongly. Also, the trend is seen strongly clearly in the strong case. (Acoustic Nasality ++, nasalance score 60% or more) like hyper-nasality to, acoustic and the reinforcement of nasal voice conceivabal that there are the decline and relation of the third formant frequency in comparison with a normal adult even nasalance score.The decline of the second and the third formant frequency are clearly even in the case that glottal stop is observed and agree with the report with regard to the relation of hyper-nasality and glottal stop in the past. Furthermore, the main point of this research announced in the 45th Japanese Oral and Maxillo-facial Surgery General Meeting in Chiba City. Less