求翻译：小波变换是一种对信号的时频分析方法，它具有多分辨分析的特点，通过对含有噪声信号的心电信号利用Coif4小波进行8层小波分解，然后用小波分解重构法去除基线漂移，用改进的阈值算法去除肌电干扰和工频干扰，并对MIT-BIH心率失常数据库中的心电信号进行仿真。仿真结果表明，本文方法的有效性，降低了心电信号的噪声含量，为准确的疾病分析诊断提供很好的帮助。是什么意思？

Wavelet transform is a time-frequency signal analysis methods, it has the characteristics of multi-resolution analysis, through the noisy ECG signal using wavelet Coif4 8-layer wavelet decomposition, and then use the wavelet decomposition and reconstruction method to remove the baseline drift using

正在翻译，请等待...

The wavelet transformation is one kind to the signal time frequency analysis method, it has the multi-resolution analysis characteristic, through to includes the noise signal heart electrical signal to carry on 8 wavelets using the Coif4 wavelet to decompose, then with the wavelet decomposition rest

Is a kind of signal Wavelet transform time-frequency analysis method, it has the characteristics of multi-resolution analysis, through the noise of ECG signal 8 using Coif4 Wavelet Wavelet Decomposition and Wavelet Decomposition and reconstruction method for removing baseline wander, improving thres