连续话语中双音节韵律词的重音感知

The perception of disyllabic word stress of Chinese speech in utterance

对于从微软亚洲研究院的汉语语音语料库中获得的300个语句中的1,898个双音节韵律词进行了重音感知实验,实验结果表明,连续话语中双音节词的重音感知特点与孤立词的重音感知特点有所不同,它受到词所在的韵律边界的显著影响。在感知实验中,词内两音节的重音得分之差与它们的高音点音高差和时长差都表现出正相关,但与高音点音高差的相关强于与时长差的相关。高音点音高差和时长差在非停顿前不相关,在停顿前为较弱的正相关。实验结果还表明,音节的重音感知受到调型的显著影响。

A perceptual experiment was conducted on the stress of 1,898 Chinese disyllabic words in 300 sentences taken from the Chinese speech corpus of Microsoft Research Asia. The analyses revealed (1) that the perceptual stress location in utterance was influenced by the prosodic boundary where a word stood; (2) that the perceptual stress degree of a syllable was positively correlated with the pitch of the syllable and the duration as well, while the correlation coefficient between the stress degree and the pitch was larger than that between the stress degree and the duration; (3) that the pitch and the duration was not correlated if there was no pause following a word, but weakly and positively correlated if there was a pause; (4) that tone pattern of a syllable showed an effect on stress perception. The results of the experiment indicate that the perceptual characteristics of word stress in utterance are quite different from those in isolated words.