Denoising ECG Using Different FIR Filters on FPGA

An electrocardiogram (ECG) is a low-amplitude biological signal, and it is easily contaminated by external biological noise. Removing noise from ECG signals is a fundamental step for ECG signal analysis. Therefore, this study presents the results of digital filter bandwidth selection of the ECG signal analysis. The digital filter combination in this study includes one notch-filter, two low-pass filters and one high-pass filter. The results show that the series connection of the 55-65Hz notch filter, 100Hz low-pass filter, 40Hz low-pass filter and 10Hz high-pass filter presents a discernible ECG signal.