New aspects to event-synchronous cancellation of ECG interference: An application of the method in diaphragmatic EMG signals

An "event-synchronous interference canceller" (ESC) for cancellation of ele ctrocardiographic (ECG) interference in diaphragmatic electromyographic (EM Gdi) signals is addressed in this paper. ESC pursues the concept of the "ev ent synchronous adaptive interference canceller" (ESAIC), which was propose d in [1] as a specific application of the well known "adaptive noise cancel ler" (ANC) paradigm, but ESC uses a simple adaptive pain control (AGC) inst ead of the complex adaptive filter of the ANC, The proposed ESC method is e valuated using both computer simulations and teal EMGdi data, and its effic iency in interference cancellation is compared to that of ESAIC. Of particu lar interest is the result that the ESC ran replace the ESAIC providing bet ter performance as well as a considerable reduction of computational costs.