Fig. 5

Comparison of denoising effects of different algorithms. (a) Noisy PD signal; (b) comparison of four denoising algorithms; (c) SVD-denoised signal; (d) PCA-denoised signal; (e) ARDDMA-denoised signal; (f) WT-denoised signal.

Comparison of denoising effects of different algorithms. (a) Noisy PD signal; (b) comparison of four denoising algorithms; (c) SVD-denoised signal; (d) PCA-denoised signal; (e) ARDDMA-denoised signal; (f) WT-denoised signal.