中文说明：
用于心电信号滤波的LMS自适应噪声对消器设计，胎儿信号包含母亲信号噪声，采用自适应算法将母亲信号对消掉，得到胎儿心电信号。
English Description：
The design of LMS adaptive noise canceller for ECG signal filtering. The fetal signal contains the noise of the mother signal, and the adaptive algorithm is used to eliminate the mother signal to get the fetal ECG signal.