Laryngeal airway resistance as a function of phonation type
Laryngeal airway resistance as a function of phonation type
复制标题
喉部气道阻力与发声类型的关系
DOI：
10.1121/1.2004501
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发表时间：
1980
影响因子：
2.4
通讯作者：
E. Holmberg
中科院分区：
文献类型：
--
作者：
E. Holmberg
探讨了一种间接估算喉部呼吸道阻力的方法。建议用清音停止时的口内压(IOP)与打开元音时的体积速度空气流量(V0)之比/pa/来估算喉部的呼吸道阻力(RLaw)；RLaw=IOP/V0。主要变量为发声类型。假设RLaw值将反映在(1)正常、(2)按压和(3)呼吸发声时的喉部呼吸道阻力。其他受控变量为强度和基频。结果表明，无论强度和基频如何，压音的RLaw值最高，呼吸音的RLaw值最低。RLaw值在高强度和低强度之间也有很好的区分性。这些结果被解释为用该方法得到的RLaw值是一个很好的实际抗性指标。
An indirect method to estimate laryngeal airway resistance was investigated. The ratio of the intraoral pressure (IOP) for the voiceless stop and the volume velocity air flow (V0) for the open vowel in the CV utterance /pa/ was suggested to give an estimate of the laryngeal airway resistance (Rlaw); Rlaw = IOP/V0. The primary variable was phonation type. It was hypothesized that the Rlaw value would reflect the laryngeal airway resistance during: (1) normal, (2) pressed, and (3) breathy phonation. Other controlled variables were intensity and fundamental frequency. The results suggested that the Rlaw value was highest for pressed phonation and lowest for breathy phonation irrespective of intensity and fundamental frequency. Good discrimination in the Rlaw value between high and low intensity was also found. These results were interpreted to give evidence that the Rlaw value obtained with this method was a good index of actual resistance.