扩展基音周期曲线在动态HMM模型中的应用

Application of Extended Pitch Contour in Dynamic HMM Model

动态HMM模型通过描述语音特征与动态特性之间的关系来改善语音识别的性能 ,本文提出以扩展的基音周期曲线作为动态特性的描述 ,以及在识别过程中采用动态特性自动提取算法以改善识别性能。实验结果表明 ,采用扩展基音周期曲线作为动态特性的动态HMM模型 。

The dynamic HMM describe the relationship between dynamic property and speech to improve the performance of speech recognition. The extraction of dynamic property is important to the dynamic HMM model. In this paper, we use extended pitch contour as the dynamic property. An automatic dynamic property extraction method has been introduced. The result shows that the dynamic HMM model using extended pitch contour can improve the performance of speech recognition.