摘要
声调在普通话中起着构词辨义的作用,声调的准确程度是决定普通话水平的重要因素。声调的客观评测是普通话水平客观评测系统的重要子系统之一。在分析普通话声调特点的基础上,提出了能消除语速影响和音节间相互影响的建模方法。选择了能反映声调特点的5个基频比值与归一化的基频共同作为声调评测参数,利用高斯混合模型对60人的实测语音数据进行了测试,结果表明:客观测试同主观测试的符合率达到88.24%。
Tone is an important factor in Puttonghua＇s speech and plays a crucial role in assessing Putonghua proficiency levels. The objective evaluation system of syllabic tone is an important part of the Putonghua Proficiency Test （PPT）. Based on the analysis of tone features, the paper presents a novel method to eliminate influences caused by the speaking rate and the interaction between syllables. Both five pitch ratios which diffscribe tonal features and nor- malized fundamental frequencies are selected as tone evaluation parameters. The Gaussian Mixture Model is also used to test the recorded speech from 60 different speakers. Experiment results show that the system can get 88.24 % accuracy by comparing with subjective evaluation results.
出处
《中文信息学报》
CSCD
北大核心
2007年第6期116-124,共9页
Journal of Chinese Information Processing
基金
得到广东省江门市科技三项资金资助
