The roles of bottom-up and top-down information in the recognition of reduced speech: Evidence from listeners with normal and impaired hearing
The roles of bottom-up and top-down information in the recognition of reduced speech: Evidence from listeners with normal and impaired hearing
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DOI：
10.1016/j.wocn.2011.03.005
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发表时间：
2011-07-01
影响因子：
1.9
通讯作者：
Ernestus, Mirjam
中科院分区：
文献类型：
--
作者：
Janse, Esther;Ernestus, Mirjam
高度简化的发音变体，比如昨天的“yeshay”，在会话语言中比比皆是。先前的研究表明，听者只能在句子语境中理解这种发音变体。本研究进一步探讨了缩略语本身的声学特性及其在语境中的语义/句法和声学信息的作用。我们报告了五个实验，在这些实验中，参与者被测试了对来自会话荷兰语语料库的缩减词的识别。实验1，一个视觉瞌睡测试，证明我们的一组约简词不能仅仅根据它们的语义/句法上下文来猜测。实验2重复了先前的发现，即缩略词只能在其上下文中被识别。实验3表明，如果上下文以正字法转录的形式直观地呈现，则缩略词的识别能力较差。这些实验表明，听者需要略读单词本身的一些声学特性，以及语境中的语义/句法和声学信息来识别略读单词。实验4和5证实了声学信息对单词识别的重要性，表明高频听力损失既阻碍了对目标单词声学特性的解释，也阻碍了对邻近上下文的使用。(C) 2011 Elsevier Ltd.版权所有。
Highly reduced pronunciation variants, such as something like 'yeshay' for yesterday, are abundant in conversational speech. Previous research has shown that listeners understand such pronunciation variants only in their sentential contexts. This study further investigates the roles of the acoustic properties of reduced words themselves and of semantic/syntactic and acoustic information in their contexts. We report five experiments in which participants were tested on the recognition of reduced words originating from a corpus of conversational Dutch. Experiment 1, a visual doze test, demonstrates that our set of reduced words cannot be guessed just on the basis of their semantic/syntactic context. Experiment 2 replicates the earlier finding that reduced words can only be recognised in their contexts. Experiment 3 shows that the reduced words were less well recognised if the context is presented visually in the form of orthographic transcriptions. These experiments suggest that listeners need some acoustic properties of reduced words themselves, together with semantic/syntactic and acoustic information in their contexts, to recognise reduced words. Experiments 4 and 5 confirm the importance of acoustic information for word recognition by showing that high-frequency hearing loss hinders both the interpretation of the target words' acoustic properties, and the use of neighbouring context. (C) 2011 Elsevier Ltd. All rights reserved.