非平稳噪声中迟电位与信噪比的提高

Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society Pub Date : 1995-09-20 DOI:10.1109/IEMBS.1995.579258

R. Atarius, L. Sornmo

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引用次数: 1

摘要

为了提高平均心电图的信噪比，提出了一种“瞬时”最优滤波器。该滤波器是为噪声水平随节拍而变化的情况而设计的。仿真结果表明，与同类滤波器相比，该滤波器具有更好的性能，可以处理具有相同噪声水平的拍。给出了将该滤波器应用于心脏晚电位检测的一个实例。

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Late potentials and the improvement of signal-to-noise ratio in nonstationary noise

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.

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Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society

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