一种基于自适应的新滤波技术

在心电信号的采集过程中，不可避免地会混入肌电噪声和各种干扰信号，为节获得含有较小噪声的ＥＣＧ信号，便于分析，需要对采集到的ＥＣＧ信号作消噪处理。

A New Filter Technology Based on Adaptive Filter

In the processing of getting the ECG signals,we can not get rid of noise.In order to get ECG signal with less noise,and easy to analyse ECG signals.We should remove noise from the ECG signals obtained.At present,there are many mathods to design the ECG filter,and the adaptive filter is one of them.In the implementation of adaptive filter,we need a reference signal that is independant with the original signals,but is not related to getting the reference singnal directly from a part of the body is difficult.In this paper,we suggest a new method based on adaptive filter.The reference signal can be obtained directly from the original signal by separating the noise and signal by using a prediction filter.We used it to process the ECG signals and background noise when the noise was depressed by more than 12dB.