TODO.md

TO DO

Priority Triage

• Better logging. Needs to be compile-out, multiple loggers, efficient output, separate loglevel per logger, compile-out by loglevel
  • Logger::asyncLog to be called from isr to run in loop to avoid disrupting isr
• Efficient print lib
• Finish nailing down global musicality parameters
  • Range, Deviation, Tonality, Coherence?

Scale/Temperament

• Replace array rotate in Scale with offset
• Support Scala tunings
  • qv http://www.music.chrblee.net/tuningaid/

MIDI scheduler

• priority queue of messages based on their intended tick time?
• abstract "pitch+duration" and "articulation" structs instead, from which messages are derived?
  • getting there, but how to abstract it? What's useful to have on the abstract Performer, vs. in a specific concrete performer implementation?

MIDI clock resilience

• The highest bpm that I can reach without dropping notes and locking up the serial is about 160 (on a Leonardo).
• This is with resolution of 1000us. I hate to take away resolution further than that.
• polyphonic composition doesn't seem to play all notes at once

To Triage

• Doxygen
• Instead of the current nested model, what if modules were chained. Then, for instance, a module that produces a composition could feed a module that arpeggiates in some way based on that composition.
• replace all byte with uint8_t bc actually Arduino.h's "friendly" things are terrible.
• PerformPolyphonic creates too busy of lines. It should use its polyphony to allow holds and chords, not just to play four overlapping melodies.

Features Requiring Additional Hardware

• Auto-reset, in case of hang
  • Some kinds of "hang"-like behaviour could be under interrupt monitor, such as an interrupt that sets a "ms since a note was processed" global, which is updated when sending MIDI notes.

RNG

• Tune RNG scaling for uniformity, qv https://lemire.me/blog/2017/02/28/how-many-floating-point-numbers-are-in-the-interval-01/
• 8-bit fastrand? https://github.com/edrosten/8bit_rng

Core Featureset

• EEPROM storage of parameters
• Rotary encoder and switch hardware interface
  • Optional potentiometer interface module
• ToneRowComposer
• Euclidean rhythms
• Markov (reads transition tables from SD)
• Separate composer classes for poly and mono
• Multitimbral
  • Performers can use this for multiple voice parts, or more precise articulation

Expanded Featureset

• SD card support, for modes with large amounts of static data
• MIDI clock in/out
• SP-MIDI to support a variety of output devices
  • https://www.midi.org/specifications-old/item/scalable-polyphony-midi-sp-midi
• Goldberg: a module that accepts a melody and improvises variations (from SD card)
• Parsons: Generates melodies for Parsons codes (from SD card)