Sensitivity of elastic properties to measurement uncertainties in laryngeal muscles with implications for voice fundamental frequency prediction
Sensitivity of elastic properties to measurement uncertainties in laryngeal muscles with implications for voice fundamental frequency prediction
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DOI：
10.1016/j.jvoice.2006.06.004
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发表时间：
2007-11-01
期刊：
影响因子：
2.2
通讯作者：
Titze, Ingo R.
中科院分区：
文献类型：
--
作者：
Hunter, Eric J.;Alipour, Fariborz;Titze, Ingo R.
本文讨论了测量不确定度对喉组织弹性模量计算的影响。小尺寸加上高度非线性弹性特性加剧了不确定性。切线和割线杨氏模量的灵敏度量化的变异系数，这取决于测量的参考长度和横截面积。当不考虑水合溶液的组织吸收时，用于计算小组织样品的横截面积的质量测量的不确定性影响杨氏模量计算。参考长度的不确定性对弹性的影响是其他措施的两倍。这些测量误差预测的基本发声频率的影响进行了讨论。孤立肌肉实验方案的改进建议，最大限度地注意最高灵敏度的措施。
This paper discusses the effects of measurement uncertainties when calculating elastic moduli of laryngeal tissue. Small dimensions coupled with highly nonlinear elastic properties exacerbate the uncertainties. The sensitivity of both tangent and secant Young's Modulus was quantified in terms of the coefficient of variation, which depended on measurement of reference length and cross-sectional area. Uncertainties in the measurement of mass, used to calculate cross-sectional area of a small tissue sample, affected Young's Modulus calculations when tissue absorption of the hydrating solution was not accounted for. Uncertainty in reference length had twice the effect on elasticity than other measures. The implication of these measurement errors on predicted fundamental frequency of vocalization is discussed. Refinements on isolated muscle experimental protocols are proposed that pay greatest attention to measures of highest sensitivity.