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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于emd的acf基音检测改进算法
, PP. 42-47
Keywords: 基音,经验模式分解,自相关函数,本征模式函数
Abstract:
针对传统的自相关函数基音检测算法容易出现倍频错误的问题,本文提出了一种基于经验模式分解的acf基音检测改进算法.该改进算法利用emd将一帧语音信号的acf分解成多个本征模式函数和残余分量,同时根据imf的累积能量分布情况找出含有基音信息的imf,最后通过该imf准确地估计出该语音帧的基音.仿真实验结果表明:本文所提算法性能明显优于传统acf算法;相比较于检测效果较好的wac算法,本文所提算法的性能依然有了一定的提升.
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