汉语语音基音轨迹的形态学滤波和平滑

Approaches of the Morphological Filtering and Smoothing to Pitch Contrail of Mandarin Tone

本文依据数字语音信号的特点,设计了一种用于语音处理的形态学滤波算法,合理选择结构元素构筑了一组用于汉语语音基音轨迹平滑的形态学滤波器,仿真数据的实验结果表明这种方法对于随机误判点与传统中值组合平滑相比效果更佳,同时也证明了数学形态学用于语音信号研究的可行性。

In this paper, based on the traits of the digital speech signal, a new morphology filter algorithm is proposed and a new morphology filter with suitable structuring element is designed to apply to getting the preferable accurate pitch contrail of mandarin. Simulation results show that this new approach is better than the median filter on the stochastic incorrect value, and furthermore, they confirm the feasibility of the mathematical morphology to the speech signal research.