不同发声方式下正常儿童嗓音的声学分析

Acoustic Analysis of Voice Following Different Phonation Conditions in Children

目的 研究正常儿童三种发声方式下嗓音声学参数的特点。方法 对 2 4 0例正常儿童的自然舒适音、真声最高音、真声最低音进行声学分析。结果 正常儿童的微扰值、规范化声门噪声能量值均为真声最低音 >舒适音 >真声最高音 ;基频标准差值为真声最高音 >真声最低音 >舒适音 ;谐噪比、信噪比与性别、年龄及发声方式无关。结论 正常儿童三种发声方式下的嗓音质量是不同的 ,嗓音声学测试结果的判断应结合受试者的发声方式。

Objective To assess voice parametric characteristics of normal children in different age?sex?and phonation conditions. Methods Voice data of 240 children were collected and analyzed with Dr. Speech software. Acoustic signal data were measured in three phonation conditions: the lowest modal voice, natural voice, the highest modal voice. Results Perturbations and normalized noise energy from the highest value to the lowest one by one were that of the lowest modal voice, natural voice, the highest modal voice. The sequences of standard deviation of fundamental frequency were that of the highest modal voice, the lowest modal voice, natural voice. Conclusion The voice quality of normal children had distinctive characteristics in different phonation conditions.