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. 2023 May 12;13:7768. doi: 10.1038/s41598-023-33319-4

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Top panels: noiseless EMG signal; central panels: noisy EMG signals obtained by corrupting the noiseless EMG signal with flat amplitude powerline noise (left) and amplitude modulated power-line noise (right); bottom panels: signals obtained by applying the FFC filter to the noisy EMG signal with flat amplitude (left) and amplitude modulated (right) powerline noise.