
SOFT CLIP
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Soft-clips the signal using a hyperbolic sigmoid curve and by a variable amount K.
The curve is always anchored at -10V, 0V and 10V for any value of K.
Allowed K range is from 0 (no effect) to 10V (full distortion).


NOTE: clipping is a process prone to cause aliasing. Aliasing will become noticeable for values of K > 9 or so. At present, the only way to minimize aliasing (unless wanted) is resorting to Oversampling.