Technology for processing an electrocardiograph (ECG) signal is disclosed. The ECG signal can be identified, wherein the ECG signal is affected by baseline wander noise. Signal processing can be performed on the ECG signal affected by baseline wander noise in order to determine a start time and an end time for individual waveforms in the ECG signal affected by baseline wander noise. Features for the individual waveforms in the ECG signal can be extracted, wherein the features indicate one or more cardiac function metrics.本發明揭露一種心電圖(ECG)訊號處理技術。ECG訊號可作識別,其中,ECG訊號是受到基線漂移雜訊所影響。可對受到基線漂移雜訊所影響之ECG訊號執行訊號處理,以便判定受到基線漂移雜訊所影響之ECG訊號中之個別波形的開始時間及結束時間。ECG訊號中之個別波形的特徵可以被擷取出,其中,該等特徵表示一或多個心臟功能度量。110‧‧‧心電圖訊號