Quené H
Research Institute for Language and Speech, Utrecht University, The Netherlands.
J Acoust Soc Am. 1993 Oct;94(4):2027-35. doi: 10.1121/1.407504.
This paper investigates the relative contributions of accentuation and of durational word boundary cues to listeners' perceived word segmentation in Dutch. A listening experiment is reported, in which 36 two-word phrases with an ambiguous word boundary were used as stimuli. Four groups of 20 subjects each had to make a forced binary choice between the two contrastive boundary positions. Accent position on either the first or second word was varied between stimulus phrases. In both contrastive realizations of each ambiguous phrase, two durational boundary cues were manipulated, viz. duration of the pivotal consonant and rise time of the postboundary vowel. Results show that durational word boundary markers are perceptually relevant for subjects' perceived word segmentation, but only if the manipulated segment is realized as word-initial. Second, accuracy in perceived word segmentation is higher if the second word (following the ambiguous boundary position) is accented. The latter result is probably due to the higher acoustic and perceptual salience of durational as well as spectral boundary cues, which occur in initial position in the second word. Hence, the contribution of accent to word segmentation may be partly due to its "enhancing" effect on phonetic word boundary markers.
本文研究了重音和时长性单词边界线索对荷兰语听众感知单词切分的相对贡献。报告了一项听力实验，其中使用36个具有歧义性单词边界的双词短语作为刺激材料。四组，每组20名受试者，必须在两个对比性边界位置之间做出强制二元选择。刺激短语之间，重音位置在第一个或第二个单词上变化。在每个歧义短语的两种对比性实现方式中，操控了两个时长性边界线索，即关键辅音的时长和边界后元音的上升时间。结果表明，时长性单词边界标记对于受试者的感知单词切分在感知上是相关的，但前提是被操控的片段被实现为单词起始部分。其次，如果第二个单词（在歧义边界位置之后）有重音，感知单词切分的准确性会更高。后一个结果可能是由于时长性以及频谱边界线索在声学和感知上的显著性更高，这些线索出现在第二个单词的起始位置。因此，重音对单词切分的贡献可能部分归因于其对语音单词边界标记的“增强”作用。
