Key result
H-B-L cascaded FIR filters with rectangular windows improve ECG SNR by ~31 dB.
Why the study?
The study was conducted to reveal and evaluate the influence of filter positions in a cascaded filter configuration on ECG signal de-noising performance.
A specific cascaded filter configuration (H-B-L) significantly improves ECG signal de-noising performance.
In this paper, a new optimization on windowing technique based on finite impulse response (FIR) filters is proposed for revealing and evaluating the Influence of filters position in cascaded filter tested on the ECG signal de-noising. baseline wander (BLW), power line interference (PLI) and electromyography (EMG) noises are getting removed. The performance of the adopted method is evaluated on the PTB diagnostic database. Subsequently, the comparisons are based on signal to noise ratio (SNR) improvement and mean square error (MSE) minimization. Where the Rectangular, and Kaiser windows have been used for the more potent performances. The disparity average (DA) of SNR values is detected; in both Kaiser and Rectangular windows are assessed by ±0.38046dB and ±0.70278dB respectively, while the MSE values were constant. The excellent configuration or filters position (H-B-L) of the filtration system is selected according to high measurements of SNR and low MSE too, to de-noise the ECG signals. First of all, this applied approach has led to 31.30 dB SNR improvement with MSE minimization of 26. 43%. This means that there is a significant contribution to improving the field of filtration.
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Allali et al. (2021) studied ECG signal noise (n=18). Cascaded FIR filter (H-B-L configuration with Rectangular window) vs. Other filter configurations and Kaiser window was evaluated on Signal to noise ratio (SNR) improvement. The H-B-L configuration of the cascaded FIR filter with a Rectangular window achieved a 31.30 dB SNR improvement and 26.43% MSE minimization for ECG signal de-noising.
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