Figure 10
From: A smart approach to EMG envelope extraction and powerful denoising for human–machine interfaces

Results obtained on EMG corrupted by motion artifacts with SNR ranging from 0.05 to 10, and then processed via the FFC filter, the Filter20x17, and the FFT-based approach. (a) Pearson’s correlation coefficient between the noiseless and the filtered EMG-LE for the three compared algorithms; (b) differences between the correlation coefficients achieved via the FFC filter and those achieve via the Filter20x17 and the FFT-based approach.