朱小燕,王昱,刘俊. 汉语声调识别中的基音平滑新方法[J]. 中文信息学报, 2001, 15(2): 46-51.
ZHU Xiao-yan,WANG Yu,LIU Jun. An Approach of Fundamental Frequencies Smoothing for Chinese Tone Recognition. , 2001, 15(2): 46-51.
汉语声调识别中的基音平滑新方法
朱小燕,王昱,刘俊
智能技术与系统国家重点实验室,清华大学计算机系
An Approach of Fundamental Frequencies Smoothing for Chinese Tone Recognition
ZHU Xiao-yan,WANG Yu,LIU Jun
State Key Laboratory of Intelligent Technology and Systems ,Department of Computer Science and Technology ,Tsinghua University
Abstract：Mandarin is a tonal language. The tones are recognized by using the pitch contour information which can be expressed by fundamental frequencies. The classic approaches for fundamental frequencies smoothing ,such as linear smoothing ,median smoothing and linear interpolation ,can not work well in the case of that fundamental frequency is not detected correctly and several continulus frames. In this paper ,a new smoothin approach is presented ,in which a searching method is used to get a preferable accurate pitch contour. This approach is characterized by its simple ,reliable and fast performance. Experimental results show that the new approach can decrease the recognition error rate by 40%.
2001, Vol. 15 
