Developmental research on the relationship between production and perception of coarticulation

协同发音的产生与感知关系的发展研究

基本信息

批准号：
13610138
负责人：
UNO Hiroyuki
金额：
$ 1.02万
依托单位：
Hyogo University of Teacher Education
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

We examined the effects of preceding vowel /a/ on the categorization of masked stop consonants /p/ and /t/ which followed the vowel in successive vocalizations. In these experiments, a phonemic restoration was confirmed for adult subjects. We found that frequencies of second formant (F2) at the end of the vowel preceding /t/ increased in contrast with those of the vowel preceding /p/. It seems that F2 transitions in the preceding vowel are discriminative cues. The phonemic restoration was also found in infants, but the degree in infants was smaller than that in adults, indicating that temporal facilitation on phonemic perception occurs more lately in vocal development. Furthermore, there were a significant increment of identified rate on the stop consonants in proportion of age, and a significant correlation between the degree of phonemic restoration and the frequencies of F2 at the end of the vowel /t/ in each infant. These results suggest that production and perception of co-articulation depend each other, particularly in development. Before modeling, we did the research related to the change of the quantitative nature with the qualitative nature in the interface of the language. As a result, it just became clear that the most suitable value for co-articulation and acoustic characteristics in real time had an influence strongly on not only a limitation by co-articulation movement but also a limitation by perception.

我们检查了先前的元音 / a /对掩盖停止辅音 / p / t / t /的分类的影响，后者在连续发声中跟随元音。在这些实验中，成人受试者证实了音素恢复。我们发现，与元音之前的元音末端 /t /t /t /p /p /p /p /p /p /p /t /t /t /t /t /t /t /t /t /t /t /p /p /相比，第二强共振剂的频率（F2）的频率增加。似乎F2在前面的元音中的过渡是歧视性提示。在婴儿中也发现了音素恢复，但婴儿的程度小于成年人的程度，这表明在声学发展中，语音感知的时间促进性更大。此外，在年龄的比例中，停止辅音的率有显着的增长，并且在每个婴儿中元音 / t /末端的F2频率之间存在显着相关性。这些结果表明，共同发电的生产和感知彼此取决于彼此，尤其是在发展中。在建模之前，我们进行了与语言界面中定性性质的变化有关的变化有关的研究。结果，很清楚，实时共同发言和声学特征的最合适价值不仅对共同发明运动的限制，而且对感知的限制也很大。