Microtonal music is a focus for me both as a composer and programmer. I’m the inventor of Tonal Plexus keyboards and everything found at http://hpi.zentral.zone
I’m very glad to see microtonal support in Dorico, and would like to offer my help to the development team on this topic in whatever way I can. I use an expanded notation system for my microtonal music http://musictheory.zentral.zone/huntsystem1.html and would be very interested to know if Dorico could be used to produce this expanded staff output.
As far as microtonal output, until Dorico’s native microtuned output is working (which it sounds like could take a long while, for reasons related to VST3), a feature which would be very helpful in the mean time would be to provide external MIDI output. I heard from a Dorico team member that this is planned for a future release.
As soon as Dorico supports sending MIDI to virtual ports, Dorico users can simply connect playback to other apps in order to get microtonal playback. The free software Scala provides playback functionality in a limited way, though it’s hard to get it working on a Mac. I’ve written several commercial apps for this purpose, the best known of which is called microsynth. It is a multi-timbral microtonal soundfont synth with a lot of advanced functions not found in any free tool. Features list and download at http://hpi.zentral.zone/microsynth
Also, if anyone has questions for me about microtonal stuff in general, rather than posting on the Dorico forum (where the focus needs to be Dorico!), please reach me through email at http://hpi.zentral.zone/email Thanks.
Aaron Andrew Hunt