声强和频率对发声稳定性的影响

Effects of Sound Intensity and Frequency on Phonatory Stability

目的 研究声强和频率对发声稳定性的影响。方法 对正常成年男、女性各３０ 例，进行了嗓音声学测试。结果 随着声强增加或频率提高，发声稳定性增大，频率微扰和振幅微扰减小，ＨＮＲ增大。经方差分析，多数差异具有统计学意义（ Ｐ＜ ０ ．０５ 或０ ．０１） ，男性声强对ＨＮＲ 的影响无显著差异（Ｐ ＞ ０ ．０５） 。性别之间声学参数亦有差异。结论 声强和频率对发声的稳定性有影响。

Objective To investigate the effects of sound intensity and frequency on phonatory stability.Methods 30 cases of normal adult men and 30 women were measured acoustically. Results Phonastory stability rose with smaller jitter and shimmer and larger HNR as sound intensity and frequency increased,and most were significant (P<0.05/0.01),with the exception of the effect of sound intensity on HNR in men.The gender had effect on phonatory stability in a degree.Conclusion Sound intensity and frequency have some effects on phonatory stability.Phonation mode should be considered to evaluate the acoustic measurements.