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Round to nearest simetone

Hi,
Could someone please advise me on how best to round midicents to the nearest semitone in OM? Presumably using om-round, but I can’t quite work out how to round to the nearest 50 cents.
Thanks,
Peter

Hi peter, use approx-m
first input midicents
second approx : 2 for 1/2
4 for 1/4
8 for 1/8

Best
K

Super! Merci beaucoup.