Fig. 2

Denoising results analysis: (a) Clean data; (b) Field noise record; (c) Noisy data (− 6.86 dB); (d) Denoising results; (e) Filtered noise by MFIEN.
Denoising results analysis: (a) Clean data; (b) Field noise record; (c) Noisy data (− 6.86 dB); (d) Denoising results; (e) Filtered noise by MFIEN.