Toner M A, Emanuel F W, Parker D
University of Wyoming, Laramie.
J Speech Hear Res. 1990 Jun;33(2):238-44. doi: 10.1044/jshr.3302.238.
Direct magnitude estimation (DME) and equal-appearing interval (EAI) ratings of perceived roughness and spectral noise level (SNL) measurements of isolated sustained vowel samples (/a/ and /i/) were obtained. The linear and curvilinear relationships between the resulting roughness ratings and SNL were then examined. In the present study, the comparison between the two models resulted in conflicting evidence regarding the model that best described the relationship between roughness ratings and SNL measurements. In all comparisons, however, a significant linear component was indicated. Additionally, when a significant curvilinear component was indicated, the difference between the lines and curves that were fit to the data was minimal. The present findings suggest, therefore, that a high degree of linearity exists between both DME and EAI roughness ratings and SNL.
对孤立的持续元音样本（/a/和/i/）的感知粗糙度进行直接量级估计（DME）和等距量表（EAI）评分，并测量其频谱噪声水平（SNL）。然后研究所得粗糙度评分与SNL之间的线性和曲线关系。在本研究中，两种模型之间的比较产生了关于最能描述粗糙度评分与SNL测量值之间关系的模型的相互矛盾的证据。然而，在所有比较中，均显示出显著的线性成分。此外，当显示出显著的曲线成分时，拟合数据的直线和曲线之间的差异最小。因此，本研究结果表明，DME和EAI粗糙度评分与SNL之间都存在高度的线性关系。
