Description:
Looks for the matching distortion of a chord (through scaling) that resembles the input chord <orig> most closely or differs from it most. Effectively tests with Ôcommon-notesÕ.
Arguments:
<minout, maxout> = lists of values defining the scaling processes that are tested (one of them may be an atom)
<approximation> = the desired approximation (to 1/2 tone, 1/4 tone or 1/8th tone) before the common-note comparison is applied
<comparison> = mode of comparison, either resulting in the most similar chord through <sim> or the most different <diff>.
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