The anterior two third of glottis (phonatory portion), mucosa over the posterior commissure and the arytenoids muscle all remain intact.

此过程只影响软骨内侧，然而声门前三分之二的发声区，后黏合处的黏膜及皆持。

In order to study laryngeal phonic function,the methods of acoustic evaluation and phonatory detection has become the focused problem by doctors in otorhinolaryngology and speech pathology.

子计算机嗓音测试及频谱分析已成为嗓音客观检查的重要手段。其测试参数为喉部疾病诊断、疗效评价的主要指标。