A pole-radius-varying IIR notch filter with enhanced post-transient performance

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• 作者：K.P.S. Rana ; ^{kpsrana1@gmail.com} ; Vineet Kumar ^{vineetkumar27@gmail.com} ; Ayush Gupta ^{ayugupta2612@gmail.com}
• 关键词：Digital IIR notch filter ; Transient suppression ; ECG signals ; Pole-radius-varying filter ; Post-transient filter performance enhancement
• 刊名：Biomedical Signal Processing and Control
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：33
• 期：Complete
• 页码：379-391
• 全文大小：3981 K
• 卷排序：33

文摘

A new time-varying pole-radius IIR notch filter is proposed. Hyperbolic tangent sigmoid function is used to vary the pole-radius. The filter is found to be superior for transient suppression and selectivity. Power line interference from an ECG signal is efficiently removed. The proposed filter is analysed for stability and hardware tested.