Description:
Progressively distorts <chord> until the distortion specified by <minout> and <maxout> is reached. The argument <steps> determines the number of intermediate distortions to be produced between the unaltered <chord> and
the final distortion (For explanation of frequency distortion, as well as the use of <minout>, <maxout>, <minin> and <maxin> see the box 'fdistor').
<chord> may not be a list of chords.
The optional argument <unit> determines whether <chord> is entered in midicents, ('midic'), or in hertz ('freq'). If 'midic' is selected the values will be converted to frequencies inside the function and then the output is reconverted to midicents. If 'freq' is selected the entry, calculations and output are all in hertz.
The optional argument <output> determines whether the non-distorted <chord> is included ('inclu') or excluded ('exclu') from the output list of chords.
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