Metz D E, Samar V J, Schiavetti N, Sitler R W, Whitehead R L
J Speech Hear Res. 1985 Sep;28(3):345-55. doi: 10.1044/jshr.2803.345.
Regression and principal components analyses were employed to study the relationship between three measures of speech intelligibility and 12 segmental, prosodic, and hearing ability parameters in 20 severely to profoundly hearing-impaired speakers. Regression analyses on the original 12 parameters revealed that cognate pair voice onset time differences and mean sentence duration strongly predicted speech intelligibility based on readings of isolated word and contextual speech material. A principal components analysis derived four factors that accounted for the majority of the variance in the original 12 parameters. Subsequent regression analyses using the four factors as predictor variables revealed two factors with strong relationships to the speech intelligibility measures. One factor primarily reflected segmental production processes related to the temporal and spatial differentiation of phonemes, whereas the other factor reflected prosodic features and production stability. These results are consistent with prior research that suggests independent primary and secondary roles for segmental and prosodic speech characteristics, respectively, in determining intelligibility in severely to profoundly hearing-impaired speakers.
采用回归分析和主成分分析，研究了20名重度至极重度听力受损者的三种言语可懂度测量指标与12个音段、韵律和听力能力参数之间的关系。对原始的12个参数进行回归分析发现，同源词对的语音起始时间差异和平均句子时长能够很好地预测基于孤立单词和语境语音材料朗读的言语可懂度。主成分分析得出了四个因素，它们解释了原始12个参数中大部分的方差。随后使用这四个因素作为预测变量的回归分析显示，有两个因素与言语可懂度测量指标有很强的相关性。一个因素主要反映了与音素的时间和空间差异相关的音段生成过程，而另一个因素反映了韵律特征和生成稳定性。这些结果与先前的研究一致，先前的研究表明，在重度至极重度听力受损者的可懂度决定中，音段和韵律语音特征分别具有独立的主要和次要作用。
