一种改进的基于倒谱距离端点检测方法研究  

A Modified Method of Endpoint Detection with Cepstrum Distance

作　　者：董胡 

机构地区：[1]长沙师范专科学校电子信息工程系,长沙410100

出　　处：《计算机与数字工程》2013年第7期1078-1080,共3页Computer & Digital Engineering

基　　金：湖南省教育厅(编号:12C0952)资助

摘　　要：在讨论传统倒谱距离语音端点检测方法不足的基础上,提出了一种改进方法。通过对语音信号三个端点检测的特征参数短时能量、短时平均过零率和倒谱距离逐一分析研究,提出了一种结合三者特征的语音参数,将其应用于端点检测中。实验结果表明,该方法相对于基本倒谱距离检测方法,在低信噪比时检测性能有较明显提高。Based on the imperfect discussion of the traditional speech endpoint detection method of cepstrum distance, an improved method is proposed. By analyzing the three endpoint detection of speech signal, including the characteristic parameters of short time energy, short time zero rate on average and cepstrum distance, a combination of the three features is proposed, applied to the endpoint detection. The experimental results show that compared to the basic cepstrum distance detection method, this method is obviously improved in low signal to noise ratio detection performance.

关 键 词：倒谱距离 短时能量 过零率 信噪比 

分 类 号：TN912.35[电子电信—通信与信息系统]