基于指数正弦原子的汉语韵母的建模方法

Chinese finals modeling method based on exponential sinusoidal atoms

针对汉语韵母所呈现出来的谐波特性,提出基于指数正弦原子的匹配追踪算法的汉语韵母建模方法。从原子字典中自适应地搜索能够表达汉语韵母信号局部特征的指数正弦原子并提取出原子参数,利用指数正弦原子及其参数进行汉语韵母的建模。仿真实验与基于Gabor原子的建模方法进行对比分析,从原子个数、信号相似度和残差能量三个方面,说明基于指数正弦原子对汉语韵母信号建模方法的有效性和优越性。

According to the harmonic characteristics presented by Chinese finals, a Chinese finals modeling method based on the matching pursuit of exponential sinusoidal atoms is proposed. Exponential sinusoidal atoms that can describe the local characteristics of Chinese finals will be searched in atoms dictionary adaptively, and atoms parameters will be extracted, Chinese finals signal can be modeled by using exponential sinusoidal atoms and the parameters. Simulation experiments demonstrate that compared to the modeling method based on Gabor atoms, the Chinese finals modeling of exponential sinusoidal atoms is more effective and superior in terms of the number of atoms, signal similarity and residual energy.