一种改进的混合激励线性预测的基音周期估计算法

本文详细讨论了混合激励线性预测(MELP)的基音周期估计算法及其改进算法.该算法采用了分数基音周期、倍数检测等技术,保证了基音周期估计的精度.同时又采用了滑动窗的方法,使得对基音周期不规则的不平稳的语音段进行基音周期估计时的误差减小.本文最后给出了该算法的测试结果及优缺点.

An Improved Pitch Detection Algorithm of Mixed Excitation Linear Prediction

This paper discusses in detail the pitch detection algorithm of Mixed Excitation Linear Prediction (MELP) and an improved algorithm. In order to improve the accuracy the techniques of fractional pitch and pitch doubling check are used. In the same time, a sliding pitch analysis window method is used, so it can reduce the pitch detection error in non-stationary speech segments with irregular pitch.The testing results are given, and the advantages and disadvantages of the algorithm are discussed.