本文首先研究根据小波变换的原理，利用小波变换和信号频域统计特性来精确地进行端点检测；然后，在研究了倒谱的相关理论基础上，实现了将语音数据进行倒谱变换，通过计算倒谱距离，在具有一定背景噪声环境下进行端点检测的实验。

This article first studies the basis wavelet transformation the principle，comes using the wavelet transformation and the signal frequency range statistical property to carry on the vertex examination precisely； Then，in has studied in the cepstrum correlation theories foundation，realized has carried on the pronunciation data the cepstrum transformation，through the computation cepstrum distance，in had under certain background noise environment to carry on the vertex examination the experiment．