Theodoridis G C, Schoeny Z G
University of Virginia, Charlottesville 22908.
J Acoust Soc Am. 1988 Dec;84(6):2270-2. doi: 10.1121/1.397021.
This study compares alternative modes of presenting sentences in testing situations where noise is employed and where the required response is only one word in the sentence. The purpose is to establish the extent to which contextual information is transmitted to the listener in the following four presentation modes: (1) acoustical presentation of the test word under noise and written presentation of the rest of the sentence (mode W); (2) acoustical presentation of sentence and test word under uniform noise (mode A); (3) superposition of the previous two modes (mode B); and (4) acoustical presentation of the test word under noise in one ear, immediately following the presentation of the rest of the sentence without noise in the other ear (mode C). Modes B and C are found to be essentially equivalent to mode W. When mode A is used, the intelligibility of the test word is substantially lower than with mode W, especially at low signal-to-noise (S/N) ratios. These results are particularly relevant to testing situations where the primary intent is to assess the utilization of contextual information in perceiving speech.
本研究比较了在使用噪声且所需反应仅为句子中一个单词的测试情境下呈现句子的不同方式。目的是确定在以下四种呈现模式中，语境信息传递给听者的程度：（1）在噪声下对测试单词进行声学呈现，而句子的其余部分进行书面呈现（模式W）；（2）在均匀噪声下对句子和测试单词进行声学呈现（模式A）；（3）前两种模式的叠加（模式B）；以及（4）在一只耳朵中对测试单词进行噪声下的声学呈现，紧接着在另一只耳朵中对句子的其余部分进行无噪声呈现（模式C）。发现模式B和C与模式W基本等效。当使用模式A时，测试单词的可懂度明显低于模式W，尤其是在低信噪比（S/N）时。这些结果与主要目的是评估在语音感知中语境信息利用情况的测试情境特别相关。
