普通话韵律词重音的听感知及声学参数研究

The Auditory Perception and Acoustic Parameters of Prosodic Word Stress in Mandarin

目的探讨普通话韵律词位置对其重音的影响及基频曲线直线拟合斜率值K、音节平均强度与词平均强度比值I、音节时长与词时长比值M这3个声学参数对重音的敏感性。方法采用听感知及声学分析相结合的方法进行分析研究。结果①韵律词单独出现和在句中出现其重音的听感知量T值的绝对值之间存在极显著差异。②韵律词位置对K值有显著影响。③重音类型对K、M有显著影响。结论①韵律词单独出现与在句中出现的重音位置及前后音节轻重差异不同。②韵律词在旬中出现时基频曲线直线拟合斜率值大于单独呈现时。③时长为韵律词重音最敏感的参数，其次是基频曲线直线拟合斜率，而强度则不敏感。

Objective To explore the effects of place of prosodic words on the stress and to study the sensitivity of 3 acoustic parameters to the stress, including K （base frequency approximation slope）, I（average syllable intensity/average word intensity） and M（syllable duration/word duration）. Methods The auditory perception abilities of the subjects were studied and the acoustic parameters were analyzed. Results （1）There were significant differences in the absolute auditory perception T values of stress when appearing independently and in the sentence. （2）The place of prosodic words had a significant influence on the K value. （3）The types of stress had an obvious effect on the K and M values. Conclusion （1）The place of stress and T values are different when the prosodic words appear independently and in the sentence. （2）The K value is greater when the prosodic words appear in the sentence than that independently. （3）Duration is the most sensitive parameter to study the stress of prosodic words, then the slope of the basic frequency, while the intensity is not a sensitive parameter.