@neauoire I've thought for a while about a whistling conlang, but I think that recognizing specific notes is maybe not something everyone can do? I thought maybe low mid high would be very easy for most, but probably too small for anything more than a few code word calls. Maybe there's a middle ground between ease of use and usefulness? In any case I think frequency based instead of note name is more reliable so that there aren't duplicates
@waporwave I've listed the frequencies under Accessibility on the Solresol page, there are other options listed in there to communicate with folks who could not discern the pitches.