This is a very difficult thing to replicate so I'm glad I saved the settings. I did a gradient (black at top, white at bottom) in GIMP, then ran the newsprint filter with these settings. The color model was black on white, pattern was line, period 0.50, angle 127.00, anti-alias oversampling factor 1, turbulence and angle boost 0.000, blocksize -1.00, blend mode replace.
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