Idemaru Kaori, Guion-Anderson Susan
Department of East Asian Languages and Literatures, University of Oregon, Eugene, OR 97403-1248, USA.
Phonetica. 2010;67(1-2):25-46. doi: 10.1159/000319377. Epub 2010 Aug 26.
This work examines the production and perception of the Japanese singleton versus geminate stop contrast in order to investigate properties that distinguish the contrast in the face of variability due to speech rate. The acoustic study found two local relational durations, the ratio of the stop to the preceding mora and the ratio of the stop to the following vowel, to be stable across speaking rates and to accurately classify singleton and geminate productions. However, the subsequent perception study demonstrated an influential role of the preceding mora duration and a marginal role of the following vowel duration on listeners' categorization. These results demonstrate that Japanese listeners can take advantage of relative duration in the perception of the stop length contrast, and that relative strength of simultaneously available acoustic cues does not necessarily translate into equal perceptual importance.
这项研究考察了日语单辅音与双辅音塞音对立的产生与感知，以探究在语速变化导致的变异性情况下区分该对立的属性。声学研究发现，两个局部关系时长，即塞音与前一个拍 mora 的时长比以及塞音与后一个元音的时长比，在不同语速下保持稳定，并且能够准确地对单辅音和双辅音发音进行分类。然而，随后的感知研究表明，前一个拍 mora 的时长在听众分类中具有重要影响，而后一个元音的时长则具有边缘作用。这些结果表明，日本听众在感知塞音时长对立时能够利用相对时长，并且同时存在的声学线索的相对强度并不一定转化为同等的感知重要性。
