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Figure 3 | BioMedical Engineering OnLine

Figure 3

From: Public access defibrillation: Suppression of 16.7 Hz interference generated by the power supply of the railway systems

Figure 3

Adaptive filtering applied on a patient with symptom of tachycardia. Plots 1 and 2 – original ECG signal. Plots 3 and 4 – the ECG contaminated with n 1 = 3 mV noise. Plots 5 and 6 – processed signal. The frequency modulation of the added interference is shown by red trace and red scale on the right. Interference amplitude at the reference channel n 2 = 2 mV. Phase shift of 52° between n 1 and n 2 .

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