基于小波变换的MBE模型基音估计算法改进

Improved MBE fundamental pitch calculation based on wavelet transform

基音周期是语音信号最重要的参数之一。MBE模型的基音周期搜索算法存在着运算量大,抗噪性能一般等缺点。本文基于小波变换,对算法进行了改进。阐述了小波变换基音周期估计原理,基音估计算法实现和实验。分析和实验表明改进算法更具实用性。

Pitch period is one of the most important parameters in speech signal.The algorithm for pitch period search with MBE model is complex in calculation and low flexible. The algorithm is improved based on wavelet transform in this paper. The principle, realization, and experiment of the improved pitch period algorithm are described. Experiments show that the improved algorithm can get a good result.