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"Disproportional" (nonlinear) suppression of impulsive noise by NDLs

Animated GIF

ANDL_demo.gif

Black line: Noisy input    Linear filter: Output noise is proportional to the input noise    ANDL: Output is insensitive to impulsive noise    Green lines: Noiseless input and outputs are superimposed on top of the respective noisy signals

NDL suppression of sub-Gaussian noise