Department of Linguistics and Cognitive Science, University of Delaware, Newark, Delaware 19716, USA.
Department of Communication Sciences and Disorders, University of Texas at Austin, Austin, Texas 78705, USA.
J Acoust Soc Am. 2019 Feb;145(2):EL129. doi: 10.1121/1.5087271.
Speech perception in noise requires both bottom-up sampling of the stimulus and top-down reconstruction of the masked signal from a language model. Previous studies have provided mixed evidence about the exact role that linguistic knowledge plays in native and non-native listeners' perception of masked speech. This paper describes an analysis of whole utterance, content word, and morphosyntactic error patterns to test the prediction that non-native listeners are uniquely affected by energetic and informational masks because of limited information at multiple linguistic levels. The results reveal a consistent disadvantage for non-native listeners at all three levels in challenging listening environments.
在噪声环境下进行言语感知既需要自下而上地对刺激进行采样,也需要自上而下地根据语言模型对掩蔽信号进行重建。先前的研究对语言知识在外语和母语听众对掩蔽言语感知中的作用提供了一些相互矛盾的证据。本文通过分析整个句子、内容词和形态句法错误模式,检验了这样一种假设,即由于在多个语言层面上的信息有限,非母语听众会受到能量和信息掩蔽的独特影响。结果表明,在所有三种具有挑战性的聆听环境下,非母语听众在这三个层面上都处于明显的劣势。