Title :
Late potentials and the improvement of signal-to-noise ratio in nonstationary noise
Abstract :
An “instantaneous” optimal filter is presented for improvement of the signal-to-noise ratio in averaged ECGs. The filter is designed for the case when the noise level varies from beat to beat. Simulation results indicate that a better performance is achieved by the new filter when compared to a similar filter designed for processing of beats with identical noise levels. An example is presented in which the filter is applied to the detection of cardiac late potentials
Keywords :
electrocardiography; medical signal processing; noise; ECG late potentials; averaged ECGs; beats processing; cardiac late potentials detection; electrodiagnostics; instantaneous optimal filter; nonstationary noise; signal-to-noise ratio improvement; Computational modeling; Electrocardiography; Gaussian noise; Maximum likelihood estimation; Noise cancellation; Noise level; Nonlinear filters; Signal processing; Signal to noise ratio; Wiener filter;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.579258
