TY - JOUR N2 - In this paper a concept of finite impulse response (FIR) narrow band-stop (notch) filter with non-zero initial conditions, based on infinite impulse response (IIR) prototype filter, is proposed. The filter described in this paper is used to suppress power line noise from ECG signals. In order to reduce the transient response of the proposed FIR notch filter, optimal initial conditions for the filter have been determined. The algorithm for finding the length of the initial conditions vector is presented. The proposed values of the length of initial conditions vector, for several ECG signals and interfering frequencies, are calculated. The proposed filters are tested using various ECG signals. Computer simulations demonstrate that the proposed FIR filters outperform traditional FIR filters with initial conditions set to zero. L1 - http://www.journals.pan.pl/Content/90038/PDF/Journal10178-VolumeXIXIssue4_14.pdf L2 - http://www.journals.pan.pl/Content/90038 PY - 2012 IS - No 4 EP - 776 DO - 10.2478/v10178-012-0068-x KW - measurement KW - signal processing KW - finite impulse response (FIR) filter KW - non-zero initial conditions KW - transient response KW - electrocardiography. A1 - Kocoń, Sławomir A1 - Piskorowski, Jacek PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2012 T1 - Digital Finite Impulse Response Notch Filter with Non-Zero Initial Conditions, Based on an Infinite Impulse Response Prototype Filter SP - 767 UR - http://www.journals.pan.pl/dlibra/publication/edition/90038 T2 - Metrology and Measurement Systems ER -