i guess the TL/DR is: no, there has been no specific effort to make microtonal studies. but on the other hand there are many norns users who use the device to make microtonal music.
most the synthesis engines you’ll find on norns have been consciously designed to support arbitrary frequency input.
that said, most scripts just use a default midi-12tet conversion. there have been a couple different scala parsers written. here is a microtonal sequencer that understands scala files:
and it is easy to make things that explicitly work with ratios. here is a drone machine that builds up sinewaves as JI ratios, optionally against live-captured fundamental pitches
this uses (a local copy of) the built in JI scale library on norns:
(i find that a dense JI gamut is helpful for more than just scales - for example, timing / loop division knobs.)
one thing on my list of things to do for norns, is add a scala parser and intonation library at the system level, as a drop-in alternative to midi->12tet conversion, so that most scripts that work with midi notes can easily be adjusted to arbitrary tunings.
