Warren D W, Rochet A P, Dalston R M, Mayo R
University of North Carolina Craniofacial Center, Department of Dental Ecology, Chapel Hill.
J Acoust Soc Am. 1992 May;91(5):2947-53. doi: 10.1121/1.402930.
There is some evidence that speech aerodynamics follows the rules of a regulating system. The purpose of the present study was to assess how the speech system manages perturbations that produce "errors" within the system. Three experimental approaches were used to evaluate the physiological responses to an imposed change in airway resistance. The first involved subjects with varying degrees of velopharyngeal inadequacy. The second and third approaches involved noncleft subjects whose airway was perturbed by bleed valves and bite blocks during consonant productions. The pressure-flow technique was used to measure aerodynamic variables associated with the production of test consonants. The results of this study provide additional evidence that the speech system actively responds to perturbations in ways that tend to minimize a change in consonant speech pressures. The degree of success in stabilizing pressures appears to reflect the capability of the system to use whatever articulatory and respiratory responses are available.
有证据表明言语空气动力学遵循调节系统的规则。本研究的目的是评估言语系统如何处理在系统内产生“错误”的扰动。采用了三种实验方法来评估对气道阻力施加变化的生理反应。第一种方法涉及不同程度腭咽闭合不全的受试者。第二种和第三种方法涉及非腭裂受试者，其气道在辅音发音过程中通过放血阀和咬合块受到扰动。压力-流量技术用于测量与测试辅音发音相关的空气动力学变量。这项研究的结果提供了额外的证据，表明言语系统以倾向于最小化辅音言语压力变化的方式对扰动做出积极反应。稳定压力的成功程度似乎反映了系统利用任何可用的发音和呼吸反应的能力。
