Hi, there are a number of potential ways to do this, including high pass filtering of the EMG signal. Some of the methods and recommendations are summarized here:

doi.org/10.1016/j.jelekin.2005.07.003

Dear Dr. Yaghoub Shavehei ,

Dr. Agnese Sbrollini and Dr. Laura Burattini - Università Politecnica delle Marche - developed mathematical models to separate ECG and EMG signals: segmented-beat modulation method (SBMM). Please try to contact these researchers at the links below: https://www.researchgate.net/profile/Agnese_Sbrollini

https://www.researchgate.net/lab/Laura-Burattini-Lab

Best Regards,

Wagner de Godoy

Brazil

Stephen H M Brown Wagner de Godoy thank you for your answer