普通话水平客观测试中的韵母测试研究  

Study of Objective Evaluation of Final in Putonghua Proficiency Testing

作　　者：汤霖[1,2] 彭土有[2] 尹俊勋[1] 

机构地区：[1]华南理工大学电信学院,广东广州5106418 [2]江门职业技术学院电子与信息技术系,广东江门529090

出　　处：《湘潭大学自然科学学报》2012年第1期95-100,共6页Natural Science Journal of Xiangtan University

基　　金：国家自然科学基金项目(50875086);广东省自然科学基金项目(8152900006000002);广东省省部产学研结合项目(2011B090400120)

摘　　要：在分析比较语音共振峰、LPCC、MFCC与Bark谱等语音特征参数的基础上,选择了Bark谱作为普通话水平客观测试中的韵母评测参数,实验结果表明其语音区分能力优于其他特征.根据音征互载的特点,提出了声韵结合的韵母评测建模方法.针对鼻韵母评测精度低的问题,提出了对鼻韵尾段单独建模的二次评价策略.通过对在普通话水平测评现场录制的语音数据进行的评测实验,证明所提出方法能有效提高评测精度,其韵母总体评测精度达到95.80%.After analyzing and comparing four kinds of speech features： formant,LPCC,MFCC and Bark spectrum,the last kind is selected as the features of speech in objective evaluation of final,experimental results show that these features are distinct prior in distinguishing the final speech.Depending on the features of Intial-Final Coarticulation,a modeling method of Intial-Final combinations has been proposed.Using the separate models of the nasal segments in the Final,this paper has proposed a secondary evaluation strategy.The evaluation experiments on the speech data recorded in the real Putonghua Proficiency Testing sites show that the proposed methods can efficiently increase the evaluation accuracy.The accuracy of total final objective evaluation is 95.80%.

关 键 词：韵母客观测评 计算机辅助语言学习 普通话水平测试 语音客观评测 语音处理 

分 类 号：TN912.3[电子电信—通信与信息系统]