Commits on Mar 2, 2024

1. Add MIDI output support (with some limitations) …

   Adds support for MIDI output, so you can use the autokalimba to play an
   external synth! This uses Web MIDI, which is available in Chrome and
   Firefox currently. In my experience, it works best in Chrome.
   
   I tested this with my Roland SC-7. That's a General MIDI device with no
   panel controls, hence me adding dropdown and buttons for sending Program
   Changes for my convenience, but they're useful for other devices too.
   
   Some features aren't supported yet:
   
   - Tuning. Probably easy to add using the RPN for Fine Tuning.
   - Strumming. This would need a scheduling system so stums can be
     cancelled without sending a Note Off too late or too early.
   - Changing the voicing of a chord while it is playing, either due to
     a new bass note or due to bending. This is tricky because, when using
     just a single MIDI channel, there's no standard way to change a note
     after it has begun. Restarting the note (Note Off followed by Note On)
     doesn't sound good. We could add a mode where we use one channel per
     chord to allow per-note pitch bends, à la MIDI Polyphonic Expression?
   
   In line with many MIDI instruments, the MIDI output is independent of
   the normal synthesis output. They can play together in a duet! 🎶

   

   hikari-no-yume committed Mar 2, 2024
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